Motion and Force Summative Assessment

A sprinter runs 400 m west and then turns around and goes 100 m east. Her displacement is:

• a. 300 m west

• b. 2 m west

• c. 400 m southwest

• d. 400 m

A car is traveling at 70 mph for 2.5 hours. How far did the car travel?

• a. 140 miles

• b. 175 miles

• c. 28 miles

• d. 0.036 miles

Speed can be calculated by dividing distance by ________________.

• a. time

• b. displacement

• c. velocity

• d. acceleration

The speed of a car at a particular moment is its ______________ speed.

• a) average

• b) constant

• c) instantaneous

• d) negative

A fly is sitting still on the counter top in your kitchen. It takes off and after 3 seconds it is traveling at 12m/s. What was the acceleration of the fly?

• a. 1.33 m/s2

• b. 0.75 m/s2

• c. 4 m/s2

• d. there is not enough info given

Which point represents the greatest speed?

• Point 1

• Point 2

• Point 3

• Point 4

In this speed vs. time graph, the object at point B:

• a. Has positive acceleration

• b. has constant speed

• c. has negative acceleration

• d. is not moving

In this speed vs. time graph, the object at point A:

• a. Has positive acceleration

• b. has zero acceleration

• c. has negative acceleration

• d. is stopped

For every action, there is an equal and opposite reaction.

• A. Newton's first law of motion

• B. Newton's second law of motion

• C. Newton's third law of motion

An object at rest stays at rest and an object in motion stays in motion with the same speed and the same direction unless acted upon by an unbalanced force.

• A. Newton's first law of motion

• B. Newton's second law of motion

• C. Newton's third law of motion