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WorksheetsMotion & Forces Unit
Total questions: 50
Worksheet time: 2hrs 40mins
Which of the following is considered a contact force?
the force between two magnets
the gravitational pull of a planet
friction between an object and air
the force between two charged particles
Which term describes the tendency of a moving object to continue moving at the same velocity unless an unbalanced force acts on it?
inertia
friction
gravity
acceleration
Which of the following explains why the coin falls into the glass rather than moving to the side with the index card?
Newton’s first law of motion
Newton’s second law of motion
Newton’s third law of motion
Newton’s law of universal gravitation
Which of the following is an example of a force that acts at a distance?
An airplane experiences friction as it moves through air.
A book experiences a normal force as it rests on a table.
A soccer ball experiences a force as it is kicked across a field.
A magnet is pushed away when it is brought near the end of another magnet.
Why is the magnetic force considered to be an action-at-a-distance force?
Magnets must be far apart in order to exert a force.
Magnets do not have to touch each other to experience a force.
Magnets push each other apart to increase the distance between them.
Magnets must be large in size in order to exert a force that is strong enough to notice.
Why is the friction force considered to be a contact force?
Friction affects only solid objects.
Friction always acts in the same direction.
Friction is produced when objects slide past one another.
Friction acts in a direction opposite to the direction of an object’s motion.
What is the net force toward the right on the box?
0 N
50 N
100 N
2,500 N
Jessica has two balls. One ball has a mass of 1 kg. The other ball has a mass of 2 kg. She pushes each with a force of 100 N. How does the acceleration of the two balls compare?
The 1-kg ball accelerates the same as the 2-kg ball.
The 1-kg ball accelerates half as much as the 2-kg ball.
The 1-kg ball accelerates twice as much as the 2-kg ball.
The 1-kg ball accelerates four times as much as the 2-kg ball.
During a baseball game, a hitter strikes the ball with a bat. When this happens, the ball and the bat exert a force on each other. Why does the ball accelerate away from the bat more than the bat accelerates away from the ball?
The ball has less mass, so it exerts less force on the bat.
The ball has greater velocity before the collision, so the force affects the ball more than it affects the bat.
The bat exerts more force than the ball because the batter is exerting a force on the bat as it hits the ball.
The ball has less mass, so the equal force on the ball and the bat causes greater acceleration of the ball.
If the sneaker remains motionless, which statement is true?
F and Ffriction have equal strength.
Ffriction has greater strength than F.
F, Ffriction, Fgravity, and Ftable all have exactly the same strength.
Ftable and Ffriction have the same strength, and F and Fgravity have the same strength.
What is the vertical force on this box?
50 N Upward
100 N Upward
50 N Downward
100 N Downward
Consider two objects whose masses are 100 g and 200 g. The smaller object strikes the larger object with a force of 500 N. According to Newton’s third law of motion, what force does the larger object exert on the smaller object?
250N
500N
1,000N
1,500N
A moving object collides with a stationary object. Which of the following statements is true according to Newton’s third law of motion?
Each object exerts a force on the other, and the two forces are equal and in opposite directions.
Each object exerts a force on the other, and the two forces are the same in magnitude and direction.
Each object exerts a force on the other, and the two forces are proportional to the masses of the objects.
The moving object exerts a force on the stationary object, but the stationary object does not exert a force on the moving object.
A soccer player kicks a ball. According to Newton’s third law of motion, the player’s foot exerts a force on the ball. The ball exerts a force on the foot. Why don’t the forces cancel out to result in a net force of zero?
The ball moves before the forces can cancel out.
The forces become unbalanced due to air resistance.
The force on the ball is greater than the force on the foot.
The forces are exerted on different objects so they are not balanced forces.
Two equal forces act in opposite directions on object A. Two unequal forces act in opposite directions on object B. If these are the only forces acting on objects A and B, which of the following conclusions is true?
Only object A will accelerate.
Only object B will accelerate.
Both object A and object B will accelerate.
Neither object A nor object B will accelerate.
As the force F is applied, the sneaker does not move. Which statement below correctly describes the forces?
The net force is acting in an upward direction.
The net force is acting to the left.
The net force is moving to the right.
The net force is zero and all the forces are balanced.
What is the mass of an object that requires 100N of force in order to accelerate it at 10m/s2?
10kg
1,000kg
90kg
110kg
What is the acceleration of a 10kg mass pushed by a 5N force?
2 m/s/s
50 m/s/s
0.5 m/s/s
15 m/s/s
How much force is required to accelerate a 50kg mass at 2m/s2?
25N
100N
48N
100 m/s/s
How much force is required to accelerate a 2kg mass at 3 m/s2?
6N
0.66N
1.5N
5N
The formula for calculating average acceleration is:
Acceleration = distance/ time
Acceleration = distance/ time
Acceleration = (final velocity - initial velocity)/ time
When acceleration and velocity are in the same direction, the speed will _________.
increase
decrease
stay the same
When acceleration and velocity are in opposing directions, the speed will _________.
increase
decrease
stay the same
Objects traveling in ____________ motion experience centripetal acceleration.
postitive
negative
circular
Acceleration is a change in ________________.
velocity
motion
time
_______________ occurs when an object travels in a curved path.
positive acceleration
negative acceleration
centripetal acceleration
A decrease in the speed of velocity is called _________________.
positive acceleration
negative acceleration
centripetal acceleration
An increase in the speed of velocity is called _____________________.
positive acceleration
negative acceleration
centripetal acceleration
Acceleration can be a change in speed or __________________.
direction
velocity
motion
A helicopter flying west begins experiencing an acceleration of 3 m/s/s east. Will the speed of its velocity increase or decrease?
increase
decrease
A car taking a turn at a constant speed is accelerating.
True
False
If an object has low acceleration, it isn’t moving very fast.
True
False
An accelerating car is always gaining speed.
True
False
Direction and ________ can change when something is accelerating.
velocity
speed
motion
acceleration is 0
the acceleration is increasing
the acceleration is decreasing
A reference point is a location to which you compare other locations.
True
False
Distance traveled does not depend on the path you take.
True
False
To calculate speed, you first need to find the mass of an object.
True
False
Average speed is a way to describe the speed of an object that may not always be moving at a constant speed.
True
False
___________ is speed in a specific direction.
Velocity
Reference Point
Speed
Position
__________ is a location to which you compare other locations.
Velocity
Reference Point
Speed
Position
___________ a measure of how far something moves in a given amount of time.
Velocity
Reference Point
Speed
Position
___________ describes the location of an object.
Velocity
Reference Point
Speed
Position
What information do you need to describe an object's location?
Velocity
Reference Point
Speed
Position
How would decreasing the time it takes you to run a certain distance affect your speed?
Decrease your speed
Increase your speed
What do you need to know to describe the velocity of an object?
Distance
Time
Direction
All of the above
What is the formula for calculating average speed?
Distance X Time
Distance / Time
Time / Distance
Speed measures how fast an object is moving at a specific moment in time. ____________ measures how far an object moves in a given period of time.
Velocity
Motion
Average Speed
____________ is the change in position over time.
Velocity
Motion
Average Speed
I like 5 blocks from school. School is considered a __________.
Reference Point
Position
Motion
