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WorksheetsGravitation unit Review
Total questions: 29
Worksheet time: 16mins
When Abigail drops a basketball from the top of a building, what do you expect to observe as it falls?
The basketball speeds up as it falls.
The basketball moves at a constant speed as it falls.
The basketball slows down as it falls.
Olivia and Henry are standing on the roof of a building. They each have a ball; Olivia has a bowling ball and Henry has a soccer ball. If they drop their balls at the same time and air resistance is negligible, the two balls will hit the ground at the same time. Do you agree or disagree with this statement?
Agree
Disagree
Ethan has a 100 g red ball and a 1000 g blue ball. He is holding one in each hand and wants to see which ball will hit the ground first if dropped. Ethan stands on a chair and drops both balls from the same height, at the same time. Which ball will hit the ground first, if we assume that air resistance is negligible?
The blue ball
The red ball
They will hit at the same time
Ava is skydiving and is in free-fall through the air. There is gravitational force acting on her. In which direction is the force of air resistance acting on Ava as she falls?
There is no air resistance acting on Ava.
The same direction as the gravitational force.
The opposite direction of the gravitational force.
We cannot tell with this information.
Lily and James are conducting an experiment on Earth. They drop a feather and a hammer from the same height at the same time. If we assume that air resistance is NOT NEGLIGIBLE in this situation, which will reach the ground first, if either?
The hammer
The feather
Both will reach the ground at the same time
Abigail is conducting an experiment by dropping a 100 kg probe towards the surface of Mars. Before being dropped, the probe has a vertical velocity of 0 m/s, and it takes 5 seconds to reach a velocity of 20 m/s. What was the probe’s change in velocity? IGNORE THE UNIT.
(a)
Ava is conducting an experiment on Mars. She drops a 100 kg probe towards the surface of Mars. Before being dropped, the probe has a vertical velocity of 0 m/s, and it takes 5 seconds to reach a velocity of 20 m/s. What is the probe’s acceleration? IGNORE THE UNIT.
(a)
Avery and Mia are playing with a swing in the park. The swing moves back and forth, as shown in the diagram below. In which position would the swing have the greatest gravitational potential energy?
Both 1 and 5
Position 1
Position 2
Position 3
Position 4
Noah is skateboarding up a frictionless half pipe. As Noah goes higher up the half pipe, what energy conversion is taking place?
KE is converted into GPE.
KE is converted into EPE.
KE is converted into thermal energy.
KE is converted into CPE.
Ava throws a coin into the air. What energy conversion is taking place after the coin leaves her hand, as it moves upward?
KE is converted into GPE
CPE is converted into GPE
CPE is converted into KE
GPE is converted into KE
What happens to a soccer ball when Mason kicks it briefly in a direction perpendicular to the direction it is rolling?
The soccer ball will continue in the same direction.
The soccer ball will come to a complete stop.
The soccer ball will change direction.
The soccer ball will move in a circular path.
What happens to a car when a continuous force acts on it in a direction perpendicular to the car’s direction of motion?
The car will continue in the same direction.
The car will come to a complete stop.
The car will change direction.
The car will move in a circular path.
Grace is observing different scenarios to understand centripetal force. Which of the following situations contain an example of a centripetal force? Choose all answers that may apply.
A moon is orbiting a planet.
A meteor falls to the earth.
A soccer player kicks a ball along a straight line.
A man swings around a rope with a ball attached.
Imagine a car that is driving around a circular track at a constant speed. This car is said to be accelerating. Is this second statement true?
True
False
Lily and her friends were discussing different objects and their motions. Which of the following is not considered a projectile?
A stone thrown across a river.
A baseball hit by a bat.
A rocket blasting off into space.
A motorcycle jumping off a ramp.
A car that is driven off a cliff.
Mia is standing on a cliff and throws a stone horizontally. The stone hits the ground in 0.5 seconds. If Mia had thrown the stone with a much higher horizontal velocity, but in the same direction, how long would you expect it to take to hit the ground? Assume that air resistance is negligible in this situation.
Less than 0.5 seconds
Exactly 0.5 seconds
Daniel is playing with a toy cannon that fires a small ball horizontally. After being fired from the cannon, what is the direction of the net force acting on the ball? Consider that air resistance is negligible.
Straight down
Diagonal (pointing from top left to bottom right)
Straight to the right
Rohan is conducting an experiment where he launches a cannonball from a cliff. Which of the diagrams below correctly show the vectors for the net force acting on the cannonball after it is launched? Consider air resistance to be negligible.
A
B
C
D
Samuel and Nora are working on a physics project involving vectors. They need to find which of the following component pairs could correspond with the black total vector shown in their project diagram. Which pair should they choose?
A
B
C
D
David is flying a plane at 500 miles per hour at a constant altitude of 12000 feet and drops a crate. When the crate hits the ground, at what position in the sky will the plane be? Assume that air resistance on the crate is negligible.
Halfway to the crate.
Directly above the crate.
It will have already passed the crate.
There is not enough information.
James is playing with a toy cannon that fires a small ball at a target, with an initial horizontal speed of 18 m/s. If it takes 2 seconds for the ball to hit the ground after being fired, what is the maximum distance that James can be from his target in order to hit it?
9 meters
36 meters
18 meters
100 meters
A student named Maya calculates that the gravitational force exerted by Earth on a satellite to be 5.1104N. What is the corresponding force exerted by the satellite on Earth?
5.1104N
-5.1104 N
There is not enough information given to calculate the answer.
Emma and Lily are playing with two magnets. If they double the distance between the magnets, the gravitational force between them:
Doubles
Halves
Quadruples
Quarters
Scarlett places an apple on a table, and it remains stationary. Which picture best shows the forces acting on the apple?
A
B
C
D
E
