Constant Acceleration

1. A car drives in a straight line at a constant speed of 60 miles per hour for 5 seconds. Find its acceleration.

• 12 m/s²

• 6 m/s²

• 0 m/s²

• 5 m/s²

Tags

NGSS.HS-PS2-1

The remote-control car in the previous example exits turbo mode, slowing from 3.2 m/s back to 2 m/s in 2 seconds. Find the car's average acceleration over this interval.

• 0.6 m/s²

• -0.6m/²

• 1.2m/s²

• -1.2m/s²

Tags

NGSS.HS-PS2-1

A particle moves along the x-axis with an initial velocity of 4 m/s and constant acceleration. After 3 seconds, its velocity is 14 m/s. How far did it travel during this interval?

• 25 m

• 26 m

• 27 m

• 28 m

Tags

NGSS.HS-PS2-1

Rickey Henderson, baseball's record holder for stolen bases, approaches third base. He dives head first, hitting the ground at 6.75 m/s and reaching the base at 5.91 m/s, accelerating at -5.11 m/s/s. Determine the distance Rickey slides across the ground before touching the base.

• 0.0822 m

• 7.88 m

• 1.05 m

• 0.95 m

Tags

NGSS.HS-PS2-1

A rock is dropped from a cliff that is 80.0 m above the ground. If the rock hits the ground with a velocity of 40.0 m/s, what acceleration did it undergo?

• 10.0 m/s²

• 20.0 m/s²

• 1.00 m/s²

• 16.0m/s²

Tags

NGSS.HS-PS2-1

A rock is dropped 80.0 meters from a cliff. How long does it take to reach the ground? (Acceleration for Gravity is -9.81 m/s²)

• 16.3 s

• 3.00 s

• 4.04 s

• 3.04 s

Tags

NGSS.HS-PS2-4

A car starts from rest and accelerates uniformly to reach a speed of 21 m/s in 7.0 s.

a) What is the acceleration?

b) What is the displacement?

• 6 m/s, 73.5 m

• 6m/s², 22.2m

• 3m/s, 22.2 m

• 3m/s², 73.5m

Tags

NGSS.HS-PS2-1

The U.S.A. bobsled team hit the brakes on their sled so that it decelerates at a uniform rate of 0.43 m/s². What is your initial velocity if your distance to come to complete stop was 85 m?

• 5.6 m/s

• 2.3 m/s

• 11 m/s

• 8.5 m/s

Tags

NGSS.HS-PS2-1

Sonic (because he is a special hedgehog) rolls up a constant slope with an initial velocity of 9.3 m/s. What is the acceleration of Sonic if its displacement is 1.9 m up the slope after 2.7 s?

• -4.5 m/s²

• -6.4m/s²

• 6.4 m/s²

• 4.5 m/s²

Tags

NGSS.HS-PS2-1