1D Kinematics Review for Retake

A dog runs with an initial speed of 7.5 m/s, then comes to a stop in 15 seconds. What is the dog's acceleration?

• -7.5 m/s

• -7.5 m/s²

• -0.5 m/s²

• 7.5 mi//hr

What happens to an object's motion when the velocity is positive and the acceleration is negative?

• The object slows down.
• The object speeds up.
• The object remains at a constant velocity.
• The object remains at rest.

What is the velocity at the top of the path when a ball is thrown into the air?

• 9.81 m/s; up

• 9.81 m/s; down

• 0 m/s

• Cannot be determined

The slope of the velocity vs time graph represents

• displacement

• acceleration

• velocity

The slope of the position vs time graph represents

• acceleration

• velocity

• displacement

Based on the graph above, describe the motion of the object from 0-4 seconds

• The object is moving in the positive direction and speeding up.

• The object is moving in the positive direction and slowing down.

• The object is moving in the negative direction and speeding up.

• The object is moving in the negative direction and slowing down.

Based on the graph above, describe the motion of the object from 6-10 seconds

• The object is moving in the positive direction and speeding up.

• The object is moving in the positive direction and slowing down.

• The object is moving in the negative direction and speeding up.

• The object is moving in the negative direction and slowing down.

Which runner stopped for a rest?

• Albert
• Bob
• Charlie

Which runner won the race?

• Albert
• Bob
• Charlie

Tags

CCSS.8.EE.B.5

The velocity of the object is changing during interval:

• A-B

• B-C

• C-D

• D-E