Physical Science- Motion

A car's acceleration is -2.5 m/s². What does this indicate about the car's motion?

• The car is maintaining a constant speed

• The car is speeding up

• The car is slowing down

• The car is moving in reverse

In the formula a = ΔV/t, what does ΔV represent?

• Distance traveled

• Time elapsed

• Change in velocity

• Average speed

Which of the following correctly describes the difference between speed and acceleration?

• Speed measures distance over time, while acceleration measures change in speed over time

• Speed measures velocity over time, while acceleration measures distance over time

• Speed is always positive, while acceleration is always negative

• Speed and acceleration are the same thing measured in different units

Which of the following is required to calculate acceleration?

• Mass and weight

• Distance and speed

• Initial velocity, final velocity, and time

• Force and mass

Tags

NGSS.HS-PS2-1

A student is analyzing motion and notices an object is speeding up. What must be true about this object's acceleration?

• The acceleration must be zero

• The acceleration must be positive

• The acceleration must be negative

• The acceleration must be constant

Tags

NGSS.HS-PS2-1

A race car increases its velocity from 15 m/s to 45 m/s in 6 seconds. What is the car's acceleration?

• 3 m/s²

• 5 m/s²

• 7.5 m/s²

• 10 m/s²

A bicycle rider slows down from 12 m/s to 3 m/s over a period of 3 seconds. Calculate the rider's acceleration.

• -2 m/s²

• -3 m/s²

• -4 m/s²

• -5 m/s²

A roller coaster car increases its speed from 5 m/s to 25 m/s in 4 seconds. What is the car's acceleration?

• 4 m/s²

• 5 m/s²

• 6 m/s²

• 7 m/s²

An airplane landing on a runway decreases its velocity from 60 m/s to 0 m/s in 12 seconds. Calculate the plane's acceleration.

• -3 m/s²

• -5 m/s²

• -7 m/s²

• -10 m/s²

Tags

NGSS.MS-PS2-2

A cyclist is traveling at 8 m/s and comes to a complete stop in 4 seconds. What is the cyclist's acceleration?

• -2 m/s²

• 2 m/s²

• -0.5 m/s²

• 4 m/s²

Tags

NGSS.MS-PS2-2