1D Kinematics Quiz

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

Describe the motion of the object from 0 to 5 seconds.

• The object is moving with a constant positive velocity.

• The object is moving with an increasing positive velocity.

• The object is not moving.

• The object is moving with a decreasing negative velocity.

• The object is moving with a constant negative velocity.

Describe the motion of the object from 5 to 10 seconds.

• The object is moving with a constant positive velocity.

• The object is moving with an increasing positive velocity.

• The object is not moving.

• The object is moving with a decreasing negative velocity.

• The object is moving with a constant negative velocity.

Describe the motion of the object from 10 to 15 seconds.

• The object is moving with a constant positive velocity.

• The object is moving with an increasing positive velocity.

• The object is not moving.

• The object is moving with a decreasing negative velocity.

• The object is moving with a constant negative velocity.

An object is released from rest on a planet that has no atmosphere. The object falls freely for 3.06 m in the first second. What is the magnitude of the acceleration due to gravity on the planet?

• 3.06 m/s²

• 1.53 m/s²

• 6.12 m/s²

• 9.8 m/s²

What is the difference between a vector quantity and a scalar quantity?

• A scalar has a magnitude and direction and a vector has only a magnitude

• A vector has a magnitude and direction and a scalar has only a magnitude

• A scalar has a direction and a vector has a magnitude

• None of the above