Force and Motion Review

FORCES & MOTION REVIEW

Multiple Choice

Find the net force of the box.

• 10 N left

• 10 N right

• 30 N right

• 20 N left

Multiple Choice

Find the net force of the box.

• 0 N (balanced)

• 20 N (balanced)

• 10 N right

• 10 N left

Multiple Choice

Find the net force of the box.

• 37 N up

• 13 N down

• 11 N down

• 11 N up

Multiple Choice

A lizard accelerates from 2 m/s to 10 m/s in 4 seconds. Which equation would be correct to find the average acceleration of the lizard?

• $$\frac{\left(10\ mps-2\ mps\right)}{4\ s}$$  
  

• $$\frac{\left(2\ mps-10\ mps\right)}{4\ s}$$  

• $$10\ mps\ \times2\ mps\times4\ s$$  

• $$\frac{\left(10\ mps\ -\ 4\ s\right)}{2\ mps}$$  

Multiple Choice

Which best describes the gravitational force in this set?

• the gravitational force is equal because the objects are the same distance apart

• Pair 1 has a greater gravitational force because the objects have less mass

• Pair 2 has a greater gravitational force because the objects have more mass

• there is no gravitational force because the objects are not touching

Multiple Choice

Which best describes the gravitational force in this set?

• The pairs have the same gravitational force because the objects have the same mass

• The pairs have no gravitational force because they are not touching

• Pair 1 has a greater gravitational force because the objects are closer together

• Pair 2 has a greater gravitational force because the objects are farther apart

Multiple Choice

Which describes why the gravitational force is greater in pair 2?

• the objects have more mass

• the objects have the same mass

• the objects are closer together

• the objects are farther apart

Multiple Choice

Why does this scenario demonstrate the law of inertia?

• the object in motion (the car) tends to stop

• the object in motion (the person) tends to continue to be in motion

• the object that is stopped (the wall) tends to move

• the object staying still (the person) tends to stay still

Multiple Choice

According to the law of acceleration, (rearranged to a = f/m) which of these should accelerate the fastest?

• a 1 kg ball kicked with 5 N of force

• a 5 kg ball kicked with 10 N of force

• a 1 kg ball kicked with 10 N of force

• a 10 kg ball kicked with 1 N of force

Multiple Choice

According to Newton's 3rd Law, Action-Reaction pairs, Which of these statements are true?

• The size of the forces on the first object is greater the size of the force on the second object

• The size of the forces on the first object is less than the size of the force on the second object

• The size of the forces on the first object is equal to the size of the force on the second object

• The direction of the force on the first object is the same as the direction of the force on the second object

Multiple Choice

A car travels north at uniform velocity a distance of 100 m in 4 seconds. What is the velocity of the car?

• 25 m/s

• 25 m/s north

• 400 m/s

• 400 m/s north