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WorksheetsForce and Motion Review
Total questions: 24
Worksheet time: 51mins
Which statement about acceleration is always true?
Both speed and direction must change for acceleration to occur.
The unit m/s is the SI unit of acceleration.
For objects to accelerate, they must speed up.
Either a change in speed or a change in direction causes acceleration.
What is the relationship between the kinetic energy of an object and the mass of an object? Assume the speed is constant.
Kinetic energy gets bigger at a faster rate than the increase of a mass of an object.
Kinetic energy decreases as the mass of an object increases
Kinetic energy gets bigger at the same rate as the mass of an object.
Kinetic energy decreases at a faster rate than the increase of a mass of an object.
Nicki rides her bike at a constant speed for 6 km. That part of her ride takes her 1 h. She then rides her bike at a constant speed for another 9 km. That part of her trip takes her 2 h. What is her average speed?
3 km/h
5 km/h
5.25 km/h
7.5 km/h
Nikhil bought a large plant in a planter for his mother. He took it home and pushed it around his living room until he found a good location for it near the window. After he watered the plant, he was very surprised how difficult it was to push the planter. Based on Newton’s second law, why does it become more difficult to move the planter? Choose the three statements that apply.
Nikhil had to apply more force to produce the same acceleration.
Increased inertia means that less force is needed to move the planter.
If Nikhil used the same amount of force, the acceleration of the moving planter would be less after adding the water.
With the water, the planter had more mass and more inertia.
Which term describes resistance to change in motion?
acceleration
inertia
net force
velocity
A dog is pulling on a leash while walking down the sidewalk. What frame of reference would indicate that the dog is not moving?
A nearby building
The leash
A tree
The sidewalk
Pam’s family is clearing some land, and there is a large boulder sitting on top of the ground. Even with the entire family pushing on it, they cannot move it. Which type of friction exists between the boulder and the ground?
rolling
sliding
fluid
static
Daylon’s family just bought a new puppy, and Daylon decided to take him for a walk. He put the puppy in a wagon and pulled the wagon along the sidewalk. From which of these reference points does the puppy appear to be moving?
the wagon
the sidewalk
the puppy's collar
Daylon
You can find the speed on a distance-time graph by finding the (a) of the line.
The acceleration of a baseball after its hit by a bat depends on the mass of the ball and the net force on the ball. This example best illustrates what law?
Newton's 1st Law of Motion
Newton's 2nd Law of Motion
Newton's 3rd Law of Motion
Newton's Law of Universal Gravitation
After an initial push, a sled begins to move downhill at 14 m/s. A few seconds later its kinetic energy has increased. The sled now has 64 times more kinetic energy than it did right after the push. How fast is it going?
8 times faster
32 times faster
64 times faster
4,096 times faster
Do you believe that you are pulled towards your science book, a bunch of grapes in your lunch, and your school building because of universal gravitation? Which two statements about universal gravitation are true?
Gravity acts between any two objects in the universe.
Gravity does not act between objects that are far apart, like you and the sun.
Gravity acts between you and each of these objects because all have mass.
Gravity only pulls things in a downward direction, like toward Earth's surface.
A girl pushes on the classroom door to open it. Which two terms accurately describe the net force acting on the door?
contact and balanced
noncontact and balanced
contact and unbalanced
noncontact and unbalanced
A woman is taking a walk, moving at a rate of 80 m/min. What additional information would you need to determine her velocity?
(a)
Two school classes are playing tug-of-war with a rope. One class pulls on the rope with a 75 N force to the left, the other pulls with a 40 N force to the right. Which two statements describe this situation?
The net force on the rope is 115 N to the right.
The forces are unbalanced, and the rope will move to the left.
The forces are balanced, and the rope does not move.
The net force on the rope is 35 N to the left.
Susan ran the 400-m sprint at the track meet, and her final time was 65 s. She reported that her velocity in the race was 6.15 m/s. Susan’s statement was an inaccurate report of velocity because she mentioned only ___________. She did not include __________________ which is also a part of velocity.
(a)
Two dogs pull on a rope. One dog pulls with a force of 5 N to the left, and the other dog pulls with a force of 3 N to the right. What is the result?
The rope remains in place.
The rope moves 2N to the left.
The rope moves 2N to the right.
The rope has a balanced force applied to it.
You might have noticed that a feather falls slowly toward the ground, while a ball falls rapidly. Which statement correctly explains the motion of these objects?
The ball does not experience fluid friction as it falls.
The feather experiences more fluid friction than the ball.
Gravity is the only force acting on the feather and the ball.
The acceleration of the ball and feather are the same.
A bus driver drove from Philadelphia to Washington D.C. He drove the first 100 km in 2 hours, the next 55 km in 1 hour, and the final 75 km in 2 hours. What is the average speed of the bus throughout the trip?
46 km/h
50 km/h
77 km/h
81 km/h
Connor received a new puppy as a birthday gift. The puppy’s food bowl was placed on a mat to keep spilled food off the floor, but every morning the food bowl is sitting across the room. Which statement accounts for this situation?
According to Newton’s third law, the bowl applied a reaction force to the puppy.
According to Newton’s second law, an action force was applied to the bowl.
According to Newton’s first law, the dog applied force to the bowl to move it.
According to Newton’s first law, the bowl has inertia.
A cross-country runner runs 4 km in 15 minutes. What can you calculate using this information?
acceleration
force
velocity
speed
Teresa did a trick in which she placed dishes on a tablecloth placed on a card table. She pulled quickly on the tablecloth, and it came off the table, leaving the dishes behind on the table. The inertia of the dishes kept them on the table according to Newton's ___________ law. The tablecloth moved when she applied force to it, as explained by Newton's ___________ law. When she pulled on the tablecloth with an action force, the tablecloth exerted a reaction force on her, as explained by Newton's ___________ law.
(a)
A soccer player kicks a ball. Which of the following describes the reaction force to this kick?
Friction between the ball and the ground
Force applied to the foot by the ball
Force applied to the ground by the foot
Friction between the ball and the foot
Pablo measured his horse at 1000 lbs, which is a measure of the horse’s _____________. He also knows that the horse is 454 kg, which is a measure of the horse’s _____________. Another measure of the horse is 4450 N, which is another way to state the horse’s _____________.
(a)
