G A2.2 - Acceleration

1. A car accelerates from rest to 21.0 m/s in 2.45 seconds. What is its acceleration?

(8.57 m/s/s)

2. A rock accelerates at 9.81 m/s/s for 1.25 s. What is its change in velocity?

(12.3 m/s)

3. A car can accelerate at 4.50 m/s/s. What time will it take to accelerate from rest to 12.0 m/s

(2.67 s)

4. A car goes from 37.0 m/s to 21.0 m/s in 3.50 seconds. What is its acceleration?

(-4.57 m/s/s)

5. A car has a final velocity of 23.0 m/s after having accelerated at 1.75 m/s/s for 7.80 seconds. What was its initial velocity?

(9.35 m/s)