Physics Quiz - Kinematic Equations

What is the rate of acceleration of a mountain bike if it slows down from 9.4 m/s to 3.0 m/s in a time of 3.75 s?

a = vf – vi / t

• -0.61 m/s²

• -1.71 m/s²

• -1.19 m/s²

• -2.07 m/s²

A policeman traveling 19.5 m/s spots a speeder ahead, so he accelerates his vehicle at a steady rate of 1.81 m/s² for 3.2 s, at which time he catches up with the speeder. What distance does the police car cover in that time?

d = v_it + ½ at²

• 35.98 m

• 56.32 m

• 71.67 m

• 91.02 m

Tags

NGSS.HS-PS2-1

A car parked on a hill starts to coast down the hill, accelerating from rest at a constant rate of 0.45 m/s². How fast will the car be moving after 7.0 s?

v_f = v_i + at

• 3.15 m/s

• 5.07 m/s

• 6.97.15 m/s

• 7.81 m/s

An airplane accelerates down a runway from rest at 3.98 m/s² for 25.9 s until it lifts off the ground. Determine the distance traveled before takeoff.

d = v_it + ½ at²

• 934.0 m

• 1004.7 m

• 1184 m

• 1334.9 m

A ball is dropped from a building. How fast is it traveling after falling for 1.77 s?

v_f = v_i + at

• 14.76 m/s

• 17.35 m/s

• 18.91 m/s

• 20.03 m/s

Tags

NGSS.HS-PS2-1