Physics - Unit 2

What is the speed of an object at rest

0.0 m/s

You run one full lap around a track. Which of the following is true

Distance is greater than displacement

Which of the following directions would not be indicated by a negative value

North

Which of the following situations represents a scenario in which displacement would be negative

A cat jumps from tree limb to the ground

Which of the following is the SI unit of velocity

Meter/second

Acceleration is defined as

The rate of change of velocity

Which of the following is the St unit of acceleration

Meter/second²

If the acceleration of a car is known, what information do you need to determine if the car's velocity is increasing

The direction of the car's velocity

If a car's velocity is positive and its acceleration is negative, what is happening to the car's motion

The car is slowing down

Acceleration due to gravity is also called

Free-fall acceleration

When there is no air resistance, objects of different masses dropped from rest

Fall with equal accelerations and with equal displacements

Objects that are falling toward Earth in free fall move

Faster and faster until reaching terminal velocity

1fa car's velocity is positive and its acceleration is positive, what is happening to the car's motion

The car is speeding up

Which of the following line segments on a velocity versus time graph is physically impossible

Vertical line

Which type of measurement has a magnitude but no direction

Scalar

What is the average speed from 0s to 4s

2 m/s

What is the average speed from 4s to 8s

0.5 m/s

What is the object's position at 6s

9 m

What is the average acceleration from 4s to 8s

0 m/s²

Which of the following is the velocity vs. time graph that matches the above graph

B