Force and Motion

A student lifts a box up 2 meters and pushes the same box up the two ramps shown below. Which statement best describes the forces needed to move the box?

• Pushing the box up ramp 1 requires more force than pushing the box up ramp 2
• Pushing the box up ramp 1 requires the same amount of force as pushing the box up ramp 2.
• Pushing the box up ramp 2 requires the student to use the most force.
• Lifting the box straight up requires less force than using either ramp

Each of the ramps below reaches a height of 1 meter. Which of the following ramps would allow someone to push a cart up to a height of 1 meter using the least amount of force?

• A
• B
• C
• D

Which of the following does a simple machine do?

• allows the users to apply less force over a longer distance
• reduce the amount of force needed to do work
• change the direction of the applied force
• all of the above

What is the formula to calculate speed?

• S = t/d
• S = d/t
• S = d x t
• S = t x d

What is the speed of a car that travels 400 m in 20 minutes?

• 20 miles/hr
• 20 m/min
• 800 m/min
• 200 miles/hr

Which of the following is a unit of speed?

• km/hr
• hr
• km
• s

What is the speed of a man who runs 10 miles in 1 hr?

• 20 miles
• 10 m/min
• 10 miles/hr
• 20 hrs

What is happening in this graph from point A to B?

• The object is accelerating.
• The object is not moving.
• The object is decelerating.
• The object is moving at a constant speed.

What is happening in this graph from point B to C?

• The object is going down a hill.
• The object is returning to its starting location.
• The object is slowing down.
• The object is staying still.

What is the net force?

• 1.3 N left
• 1.3 N right
• 3.7 N left
• 3.7 N right