NEW
Font size
WorksheetsMoving Energy Review
Total questions: 36
Worksheet time: 49mins
Two identical balls are rolling down a hill. Ball 2 is rolling faster than Ball 1.
Which ball has more kinetic energy (motion energy)?
Ball 1 has more kinetic energy.
Ball 2 has more kinetic energy.
Both balls have the same amount of kinetic energy.
More information is needed to determine which ball has more kinetic energy.
A student wearing roller skates is standing at the top of a hill. She wants to find out if she can get to the top of the other side just by coasting. She coasts down the hill and then up the other hill without pushing. The second hill is the same height as the first hill. As she coasts, her skates and the ground get a little warmer.
Will she have enough kinetic energy (motion energy) to coast to the top of the second hill? Why or why not?
Yes, she will have enough kinetic energy to coast to the top of the second hill.
Yes, she will have enough kinetic energy to coast to the top of the second hill because the second hill is the same height as the first hill.
No, she will not have enough kinetic energy to coast to the top of the second hill. Some of her kinetic energy was destroyed.
No, she will not have enough kinetic energy to coast to the top of the second hill. Some of her kinetic energy was turned into heat energy.
A cart full of apples is rolling along a road. As it rolls, many of the apples fall out of the cart. As the apples fall out, the total mass of the cart and apples decreases by half, but the speed of the cart does not change. What happens to the kinetic energy (motion energy) of the cart as the apples fall out?
The kinetic energy of the cart decreases by half
The kinetic energy of the cart is one fourth of what it was
The kinetic energy of the cart doubles
The kinetic energy of the cart stays the same
A 70 kg girl is riding her 3 kg skateboard along a level surface. She jumps as shown in the figure below, lands on the skateboard, and continues along at the same speed.
When the girl is in the air above her skateboard, does the girl or the skateboard have more kinetic energy (motion energy) and why?
The skateboard has more kinetic energy than the girl because the girl gave the skateboard her energy.
The girl has more kinetic energy than the skateboard because the girl is alive but the skateboard is not.
The girl has more kinetic energy than the skateboard because the girl weighs more than the skateboard.
The skateboard and the girl have the same amount of kinetic energy because they are traveling at the same speed.
Imagine a ball on a track where no energy is transferred between the ball and the track or between the ball and the air around it. The ball starts from rest at the position labeled Start and moves along the track toward the right.
What is the highest position the ball will reach before stopping and going back down the track? (Remember that no energy is transferred between the ball and the track or between the ball and the air around it.)
Position 1 It depends on how much the ball weighs.
Position 2
Position 3
It depends on how much the ball weighs.
Imagine a ball on a track where no energy is transferred between the ball and the track or between the ball and the air around the ball. The ball starts at Position 1 and goes down and up a dip on the track and past Position 2. Position 1 and Position 2 are at the same height.
Will the amount of energy the ball has at Position 2 be more, less, or the same as the total amount of energy the ball has at Position 1? Why? (Remember that no energy is transferred between the ball and the track or between the ball and the air around it.)
The amount of energy the ball has will be more at Position 2 because new energy will be made when the ball goes down the steep side of the dip.
The amount of energy the ball has will be less at Position 2 because energy will be used up when the ball goes up the long side of the dip.
The amount of energy the ball has will be the same at Position 1 and Position 2 because the amount of energy in the system (ball and track) will not change.
Whether the amount of energy of the ball is more, less, or the same at Position 2 compared to Position 1 depends on the speed of the ball before it gets to the dip.
Two students are running in a race. Student 1 has more kinetic energy (motion energy) than Student 2. Does Student 1 weigh more than, less than, or the same as Student 2?
Student 1 weighs more than Student 2.
Student 1 weighs less than Student 2.
Student 1 weighs the same as Student 2.
The only way to know which student weighs more is to also know how fast each student is running.
A person drops a rock off of a cliff. As the rock falls, its speed increases, and its mass stays the same. The person determined the speed of the rock at two time points. At Time 1, the rock was falling at 20 meters per second. At Time 2, the rock was falling at 40 meters per second.
How does the kinetic energy (motion energy) of the rock change from Time 1 to Time 2?
The kinetic energy of the rock at Time 2 is zero.
The kinetic energy of the rock has increased.
The kinetic energy of the rock has stayed the same.
The kinetic energy of the rock at Time 2 is the same as the kinetic energy at Time 1
In the morning, a student puts a warm can of soda in a cooler filled with ice.
He closes the cooler. A few hours later, the can of soda is colder. What happened to the total amount of energy in the cooler containing the can of soda and the ice? (Assume that no energy is transferred into or out of the cooler after it is closed.)
The total amount of energy increased
The total amount of energy decreased
The total amount of energy stayed the same
New energy was created so the total increased
Two girls are playing with two paper airplanes that are exactly the same. The girls stand the same distance from a wall and throw the airplanes toward the wall at different speeds. The first girl throws her airplane slower than the second girl. The nose of each airplane will be damaged when it hits the wall. Which paper airplane will be damaged the most when it hits the wall and why?
The slower airplane will be damaged the most because it will take longer to hit the wall.
The faster airplane will be damaged the most because it hits the wall with more speed.
Both of the airplanes will be damaged the same amount because they are traveling the same distance.
Both of the airplanes will be damaged the same amount because they are the same type of airplane.
A student uses a rubber band to shoot a toy car across a level floor. Imagine that no energy is transferred between the car and the floor or between the car and the air.
What happens to the total amount of energy in the system (car and rubber band) as the rubber band is released, and the car moves across the floor?
The total amount of energy in the system increases because the kinetic energy (motion energy) of the car increases, and the elastic potential energy of the rubber band stays the same.
The total amount of energy in the system increases because the increase in the kinetic energy (motion energy) of the car is more than the decrease in the elastic potential energy of the rubber band.
The total amount of energy in the system decreases because the increase in the kinetic energy (motion energy) of the car is less than the decrease in the elastic potential energy of the rubber band.
The total amount of energy in the system remains the same because the increase in the kinetic energy (motion energy) of the car is the same as the decrease in the elastic potential energy of the rubber band.
A girl is sitting in a chair and throws a ball. After she throws the ball, she sits still while she watches the ball move through the air. While the ball is moving through the air, does the girl or the ball have more kinetic energy (motion energy) and why?
The girl has more kinetic energy because she is alive, and the ball is not.
The girl has more kinetic energy because she weighs more than the ball.
The ball has more kinetic energy because it is moving, and the girl is not.
The ball has more kinetic energy because it is higher off the ground than the girl.
Two students have soccer balls that are exactly the same. They climb up a slide with the balls. When they get to the top of the slide, one student drops his ball into the sand below, and the other student throws his ball down into the sand below. As the balls are falling, which ball has more energy and why?
The thrown ball has more energy because it is moving faster.
The dropped ball has more energy because it is taking a longer time to fall.
The balls have the same amount of energy because they are the same type of ball.
The balls have the same amount of energy because they will fall the same distance.
Imagine a ball on a track where no energy is transferred between the ball and the track or between the ball and the air around the ball. The ball is going fast enough at Position 1 so that it will go over a hill on the track and past Position 2. Position 1 and Position 2 are at the same height.
Will the amount of energy the ball has at Position 2 be more, less, or the same as the total amount of energy the ball had at Position 1? (Remember that no energy is transferred between the ball and the track or between the ball and the air around it.)
The amount of energy the ball has at Position 2 will be more than the amount of energy the ball had at Position 1.
The amount of energy the ball has at Position 2 will be less than the amount of energy the ball had at Position 1.
The amount of energy the ball has at Position 2 will be the same as the amount of energy the ball had at Position 1.
Whether the ball has more, less, or the same amount of energy at Position 2 than at Position 1 depends on the speed of the ball before it gets to the hill.
Two cars are traveling down a road at the same speed. Car 1 has more kinetic energy (motion energy) than Car 2. Does Car 1 weigh more than, less than, or the same as Car 2?
Car 1 weighs more than Car 2.
Car 1 weighs less than Car 2.
Car 1 weighs the same as Car 2.
More information is needed to compare the weights of the cars.
Two cars are driving next to each other on the highway as shown below. In Figure 1, both cars are traveling at the same 40 km/hr. In Figure 2, both cars increase their speed to 60 km/hr.
If Car B weighs 500kg more than Car A, which of the following graphs shows the levels of kinetic energy (motion energy) of each car in Figures 1 and 2?
A
B
C
D
Object 1 and Object 2 are traveling at the same speed, but the kinetic energy (motion energy) of Object 1 is greater than the kinetic energy of Object 2. Is the mass of Object 1 greater than, less than, or the same as the mass of Object 2?
The mass of Object 1 is greater than the mass of Object 2.
The mass of Object 1 is less than the mass of Object 2.
The mass of Object 1 is the same as the mass of Object 2.
More information is needed to compare the mass of the objects.
A boy makes a small snowball and then pushes it around in the snow to make it bigger. He pushes it at a constant speed as the snowball gets bigger.
If the snowball doubles in mass, what will happen to the kinetic energy (motion energy) of the snowball?
The kinetic energy of the snowball will be less
The kinetic energy of the snowball will be double what it was because the amount of kinetic energy an object has is directly proportional to the mass of the object.
The kinetic energy of the snowball will be double what it was because the boy is now pushing harder
The kinetic energy of the snowball will stay the same because the amount of kinetic energy an object has depends only on the speed of an object and not its mass.
How does increasing the speed of an object affect the kinetic energy (motion energy) of the object?
Increasing the speed of an object decreases its kinetic energy.
Increasing the speed of an object increases its kinetic energy.
Increasing the speed of an object does not affect its kinetic energy.
Whether or not the kinetic energy of an object is affected depends on how much its speed was increased.
Two girls are playing with two paper airplanes that are exactly the same. The girls stand the same distance from a wall and throw the airplanes toward the wall at different speeds. The first girl throws her airplane faster than the second girl. As the airplanes are flying, which one has more energy and why?
The faster airplane has more energy because if two things are exactly the same, the faster one will always have more energy.
The slower airplane has more energy because it takes longer to hit the wall, and the amount of energy a thing has increases as it is moving.
The airplanes have the same amount of energy because they are exactly the same type of airplane.
The airplanes have the same amount of energy because they are flying the same distance.
A boy and a girl are sledding down a hill. The boy and the girl weigh the same, and they are using sleds that weigh the same.
If the boy and girl are sledding at the same speed, which child has more kinetic energy (motion energy)?
The boy has more kinetic energy.
The girl has more kinetic energy.
Both of them have the same amount of kinetic energy.
More information is needed to determine which child has more kinetic energy.
A girl and a boy are riding identical bicycles. The girl has more kinetic energy (motion energy) than the boy. Is the girl riding faster than, slower than, or at the same speed as the boy?
The girl is riding faster than the boy.
The girl is riding slower than the boy.
The girl is riding at the same speed as the boy.
The only way to know which child is riding faster is to also know the weight (mass) of each child.
Imagine a ball on a track where no energy is transferred between the ball and the track or between the ball and the air around it. The ball starts from rest at the position labeled Start and moves along the track toward the right.
What is the highest position the ball will reach before stopping and going back down the track? Why? (Remember that no energy is transferred between the ball and the track or between the ball and the air around it.)
Position 1. The total amount of energy the ball has will decrease as it moves along the track, and it will not have enough energy to make it over the hill.
Position 2. The total amount of energy the ball has will decrease as it moves along the track, but it will still have enough energy to make it over the hill and reach a position a little lower than the position it started from.
Position 3. The total amount of energy the ball has will not change as it moves along the track, so the ball will reach a position that is the same height as the position it started from.
Position 4. The total amount of energy the ball has will increase as the ball moves along the track, so it will have enough energy to make it over the hill and reach a position a little higher than the position it started from. r
A man is riding his bike. The man weighs 150 pounds and the bike weighs 25 pounds.
Does the bike or the man have more kinetic energy (motion energy) and why?
The bike has more kinetic energy than the man because the man is giving the bike his energy.
The man has more kinetic energy than the bike because the man is alive but the bike is not.
The man has more kinetic energy than the bike because the man weighs more than the bike.
The bike and the man have the same amount of kinetic energy because they are traveling at the same speed.
A man is driving a car. He slows down to stop at a stop sign.
When does the car have the most kinetic energy (motion energy)?
When the car's speed is 30 miles per hour
When the car's speed is 15 miles per hour
When the car's speed is 0 miles per hour
The car's kinetic energy is the same the whole time.
Two objects are moving at the same speed. The objects have different amounts of kinetic energy (motion energy). Which of the following must be true?
The objects are different sizes.
The objects have different shapes.
The objects have different masses.
The objects are made of different materials.
A cook heats up some food on a stove. He removes the food from the stove and places it on a plate. He lets the food cool. His friend tells him that the food has less energy when it is cool because some energy was transferred to the air around the food. The cook does not agree with his friend because the temperature of the air around the food did not seem to increase. Is the friend correct in saying that some energy was transferred to the air? Why or why not?
No, energy could not have been transferred to the air because energy cannot be transferred from one object to another.
No, even though energy can be transferred from one object to another, energy could not have been transferred to the air because air is not an object.
No, energy could not have been transferred to the air because energy was used up when the food cooled down.
Yes, even though the temperature of the air did not appear to increase, some energy could have been transferred to the air because the energy had to have gone somewhere.
Imagine a ball on a track where no energy is transferred between the ball and the track or between the ball and the air around the ball The ball goes past Position 1, then down and up a dip on the track, and past Position 2. Position 1 and Position 2 are at the same height.
Will the amount of energy the ball has at Position 2 be more, less, or the same as the total amount of energy the ball had at Position 1? Why? (Remember that no energy is transferred between the ball and the track or between the ball and the air around it.)
The amount of energy the ball has will be more at Position 2 because new energy will be made when the ball goes down the long side of the dip.
The amount of energy the ball has will be less at Position 2 because energy will be used up when the ball goes up the steep side of the dip.
The amount of energy the ball has will be the same at Position 1 and Position 2 because the amount of energy in the system (ball and track) will not change.
Whether the amount of energy of the ball is more, less, or the same at Position 2 compared to Position 1 depends on the speed of the ball before it gets to the dip.
When does a ball have kinetic energy (motion energy)?
A ball has kinetic energy only when it is moving.
A ball has kinetic energy only when it is moving upwards.
A ball has kinetic energy only when a person causes it to move.
A ball has kinetic energy all of the time, even when it is not moving
A person takes an ice pack out of the freezer and places it in a small empty lunch box. The person closes the lunch box. The following graph shows the thermal energy of the ice pack and the thermal energy of the air in the lunch box right after the person closes the box. The graph also shows the total amount of thermal energy (the sum of the amounts of thermal energy of the ice pack and the air in the lunch box).
Two hours later, the ice pack will be a little warmer than it was at the beginning, and the air in the lunch box will be cooler than it was at the beginning. Which of the following graphs represents the thermal energy of the ice pack, the thermal energy of the air, and the total amount of energy when the ice pack is warmer and the air is cooler? (Assume that no energy is transferred into or out of the lunch box after it is closed.)
A
B
C
D
A girl and a boy are each holding a ball. The girl throws her ball, and the boy drops his ball. Which statement describes the kinetic energy (motion energy) of the balls while they are moving through the air?
Both the ball that was thrown and the ball that was dropped have kinetic energy.
The ball that was thrown has kinetic energy, but the ball that was dropped does not.
The ball that was dropped has kinetic energy, but the ball that was thrown does not.
Neither the ball that was thrown nor the ball that was dropped has kinetic energy.
A man pushes a shopping cart through the grocery store at a constant speed of 1 m/s as shown in Figure 1. He fills his cart so that the mass of the cart and its contents is twice as much as the mass of the empty cart. He continues to push the cart at 1 m/s as shown in Figure 2.
When the shopping cart doubles in mass, what will happen to the kinetic energy (motion energy) of the cart and its contents?
The kinetic energy will be half of what it was because the amount of kinetic energy an object has is inversely proportional to its mass.
The kinetic energy will be double what it was because the amount of kinetic energy an object has is directly proportional to its mass.
The kinetic energy will be double what it was because the man is now pushing harder and kinetic energy depends on the effort required to move an object.
The kinetic energy of the cart will stay the same because the amount of kinetic energy an object has depends only on its speed and not its mass.
The kinetic energy (motion energy) of an object depends on which of the following?
Both the mass and the speed of the object
The mass of the object but not the speed of the object
The speed of the object but not the mass of the object
Neither the mass nor the speed of the object
A ball, starting from rest at Position 1, rolls back and forth along a curved track and eventually stops rolling. As the ball rolls along the curved track, the track and the ball get a little warmer.
How does the total energy of the ball and track system change as the ball rolls along the track? (Assume that no energy is transferred to or from the surroundings.)
The total energy of the ball and track system increases because new energy in the form of thermal energy is made as the ball rolls along the track.
The total energy of the ball and track system decreases because the ball loses all of its energy and eventually stops rolling, and the energy of the track stays the same.
The total energy of the ball and track system increases as the speed of the ball increases, and it decreases as the speed of the ball decreases, and the energy of the track stays the same.
The total energy of the ball and track system does not change because even though energy is transferred between the ball and track, no energy was added to or released from the ball and track system.
Imagine a ball on a track where no energy is transferred between the ball and the track or between the ball and the air around the hill. The ball is going fast enough at Position 1 so that it will go over a hill on the track and past Position 2. Position 1 and Position 2 are at the same height.
Will the amount of energy the ball has at Position 2 be more, less, or the same as the total amount of energy the ball had at Position 1? Why? (Remember that no energy is transferred between the ball and the track or between the ball and the air around it.)
The amount of energy the ball has will be more at Position 2 because new energy will be made when the ball goes down the steep side of the hill.
The amount of energy the ball has will be less at Position 2 because energy will be used up when the ball goes up the long side of the hill.
The amount of energy the ball has will be the same at Position 1 and Position 2 because the amount of energy in the system (ball and track) will not change.
Whether the amount of energy of the ball is more, less, or the same at Position 2 compared to Position 1 depends on the speed of the ball before it gets to the hill.
A child rolls a bowling ball down a flat lane toward a set of pins at a bowling alley. As the bowling ball rolls, it slows down.
When the bowling ball is traveling at half the initial speed, what will the kinetic energy (motion energy) of the bowling ball be?
The kinetic energy of the bowling ball will more
The kinetic energy of the bowling ball will be less.
The kinetic energy of the bowling ball will be double
The kinetic energy of the bowling ball will stay the same because the
