Chapter 2 Accerleration, momentum motion

What does velocity include according to its scientific meaning?

• Only speed

• Only direction

• Both speed and direction

• Neither speed nor direction

What is acceleration?

• A constant speed

• The rate of change in direction only

• The rate of change in velocity

• Slowing down of an object

What does centripetal acceleration refer to?

• Acceleration away from the center of a curved path

• Acceleration of an object toward the center of a curved or circular path

• The constant speed in a straight line

• The decrease in velocity in a circular motion

What is the scientific meaning of constant?

• Increasing over time

• Varying occasionally

• Not varying or changing over time

• Dependent on velocity

According to the graph titled "Speed Changing Over Time," what does a zero on the graph indicate about the car's acceleration?

• The car is accelerating positively.

• The car is accelerating negatively.

• The car's speed is increasing.

• The car's speed is constant.

Tags

NGSS.MS-PS3-1

When labeling parts of a graph that shows speed changing over time, what does a minus sign indicate about the car's acceleration?

• The car's speed is constant.

• The car's speed is increasing.

• The car's speed is decreasing.

• The car is at rest.

What is the SI unit of acceleration?

• m/s

• m

• m/s^2

• s^2

What does instantaneous acceleration describe?

• The acceleration of motion over a long period of time

• The acceleration of motion at a specific point in time

• The total distance traveled divided by the total time of travel

• The average speed of an object

According to the acceleration equation, what is instantaneous velocity?

• The change in velocity divided by the time traveled

• The total distance traveled divided by the total time of travel

• The speed of an object in circular motion

• The velocity at the beginning of the time interval

What is the acceleration equation used to define?

• Instantaneous acceleration

• Average acceleration

• Centripetal acceleration

• Instantaneous velocity

Tags

NGSS.HS-PS2-1