Forces & Motion

Which table is correct?

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If I drop 4 objects of different weights from various heights, which object will experience the highest gravitational force?

• the object with the largest size

• the object with the smallest size

• the object with the largest mass

• the object with the smallest mass

How does adding wheels to a chair make it easier to move around the room?

• it helps increase the force of friction on the chair

• it helps reduce the force of friction on the chair

• they help increase the mass of the chair

• they help reduce the mass of the chair

Scissors are made up of which 2 simple machines?

• a wedge and a pulley

• a lever and a wedge

• a gear and a lever

• a pulley and a gear

My class made parachutes to protect their egg from breaking when we dropped them from a roof. Students used paper, foil, a plastic bag and cardboard. One student bet another his parachute would stay in the air the longest. How could they test this?

• drop each parachute from the same height and use a stopwatch to see how long before it hits the ground

• drop each parachute from the same height and use measuring tape to see the distance it dropped

• drop each parachute from the same height at the same time and record the distance each parachute bounced once and hit the ground

• drop each parachute from a different height at the same time and use a stopwatch to find out which height had the longest hang time

I was pulling a suitcase in the airport when a wheel broke off. Why is it now harder to pull the suitcase?

• the wheel is no longer transferring force to the axle, decreasing the amount of force required to move the suitcase

• the wheel has decreased the force to the axle, increasing the amount of force required to move the suitcase

• the wheel has increased the force to the axle, increasing the amount of force required to move the wagon

• the wheel is no longer transferring force to the axle, increasing the amount of force required to move the wagon

What happens when the same amount of force is applied to both sides of the box?

• the forces are unbalanced and will move to the left

• the forces are balanced and will move to the right

• the forces are unbalanced and will remain at rest

• the forces are balanced and will remain at rest

Sawyer has two toy trucks. His green truck has a higher mass than his black truck. What will he have to do to make them go the same speed?

• he can push both trucks with the same force for the same amount of time

• he can push both trucks with the same force, but he will have to push the green truck for a longer time

• he can push both trucks for the same amount of time, but he will have to push the green truck with more force

• he can push both trucks for the same amount of time, but he will have to push the black truck with more force

I decided to kick soccer balls of different weights with different forces. Using my data in the table, which ball would travel the farthest?

• ball 1

• ball 2

• ball 3

• ball 4

When would the forces acting on the wooden box be balanced?

• when it is pushed from one side with one hand

• when it is pushed from the same side with two hands

• when it is pushed from both sides using the same force

• when it is pushed from both sides using different forces