3/28/2017
Gravity and Friction
Name:
Class:
Date:
Question #1
Miguel kicks the soccer ball to score a goal.
What force will cause the ball to stop rolling across the field?
A
electricity
B
friction
C
gravity
D
magnetism
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Question #2
A ball is pushed off the edge of a table to the floor. The ball moves faster and faster as it comes
down. What factor causes the motion of the ball to change as it falls to the floor?
A
the force of gravity
B
the mass of the ball
C
the height of the table
D
the force applied on the ball from the push
Question #3
Which action results in increased friction?
A
adding wax to skis
B
polishing a metal surface
C
applying sand to a road
D
applying grease to a bicycle chain
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Gravity and Friction
Question #4
A swing hangs from a tree limb as shown in the image.
Wind blows the swing causing it to move. When the wind stops blowing, what force causes the swing
to slow down and eventually stop?
A
the swing’s ropes
B
Earth’s gravity acting on the swing
C
air pressure acting on the swing
D
the length of the tree limb
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Gravity and Friction
Question #5
A student releases a baseball and a bowling ball from the same height at the same exact time. What
will happen?
A
The baseball will hit the ground first because there is less friction acting on the baseball.
B
The bowling ball will hit the ground first because it has more mass.
C
The bowling ball will hit the ground first because gravity is pulling harder on the bowling ball.
D
The balls will hit the ground at the same time because gravity accelerates the balls at the
same rate.
Question #6
Paul rides his bike down a ramp and applies the brakes to slow down. What force acts between the
wheels of the bike and the ramp that causes the bike to slow down?
A
acceleration
B
friction C
gravity
D
mass
Question #7
Which statement best describes what happens to a golf ball after it is hit into the air?
A
The mass of the golf ball increases, causing the golf ball to fall back to the ground.
B
The force of friction on the golf ball decreases, causing the golf ball to fall back to the ground.
C
The force of gravity pulls on the golf ball, causing the golf ball to fall back to the ground.
D
The shape of the golf ball changes, causing the golf ball to fall back to the ground.
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Gravity and Friction
Question #8
Jacinda pushes her toy bus on a smooth tile. She then pushes it across a rough tile.
How and why will the motion of the bus change?
A
The bus would move faster on a smooth surface than on a rough surface because rough
surfaces create more friction.
B
The bus would move faster on a smooth surface than on a rough surface because rough
surfaces create less friction.
C
The bus would move faster on a rough surface than on a smooth surface because rough
surfaces create more friction.
D
The bus would move faster on a rough surface than on a smooth surface because rough
surfaces create less friction.
Question #9
Denise has four bowling balls with different colors and masses. She records the mass of each ball in
a table.
Denise rolls each ball with the same force on the same surface and records the distances the balls
travel in five seconds. Which statement represents an accurate inference about the motion of the
balls?
A
The pink ball travels a shorter distance in 5 s than the red ball.
B
The red ball travels a shorter distance in 5 s than the brown ball.
C
The green ball travels a shorter distance in 5 s than the pink ball.
D
The brown ball travels a shorter distance in 5 s than the green ball.
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Question #10
A car spins out of control due to icy road conditions. What causes the car to spin out of control?
A
The ice increases friction between the tires and the road.
B
The ice causes the tires to move slower.
C
The ice freezes the surface of the tires.
D
The ice reduces friction between the tires and road.
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