Physics chapter 3 Accelerated motion

A _____ shows how velocity is related to time.

• velocity time graph

• average acceleration

• acceleration

• acceleration due to gravity

The change in velocity of an object at an instant of time is its ______.

• instantaneous acceleration

• acceleration

• average acceleration

• acceleration due to gravity

The rate at which an object's velocity changes is its _____.

• acceleration

• average acceleration

• free fall

• instantaneous acceleration

The motion of falling objects when air resistance is negligible is called ______.

• free fall

• acceleration

• average acceleration

• acceleration due to gravity

The _____ of an object is the change in velocity during some measurable time interval divided by that time interval.

• average acceleration

• acceleration

• acceleration due to gravity

• free fall

The acceleration of an object in free fall that results from the influence of Earth's gravity is _____.

• acceleration due to gravity

• acceleration

• average acceleration

• free fall

The slope of a tangent line on a velocity-time graph is the ____.

• average acceleration

• acceleration due to gravity

• velocity

• displacement

When acceleration and velocity vectors are pointing in opposite directions, the object is _____.

• slowing down

• speeding up

• not moving

• moving at a constant speed

If a runner accelerates from 2 m/s to 3 m/s in 4 s, her average acceleration is ______.

• 0.25 m/s^2

• 2.5 m/s^s

• 0.40 m/s^2

• 4.0 m/s^2

The area under a velocity-time graph is equal to the object's _____.

• displacement

• average speed

• acceleration

• stop time