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A ball is set in motion. The ball has an initial velocity of 10 m/s and moves for 30 seconds. At the end of these 30 seconds, the ball’s velocity is 40 m/s. What is the magnitude of the ball’s acceleration?
1 m/s2
A motorcycle’s velocity at the top of a hill is 20 m/s. Four seconds later, it reaches the bottom of the hill with a velocity of 52 m/s. What was the magnitude of the motorcycle’s acceleration?
8 m/s2
A car moving at 45 m/s accelerates uniformly to a speed of 117 m/s in 12 minutes. What is the acceleration of the car?
0.1 m/s2
A train moves from rest to a speed of 36 km/h in 30 minutes. What is its acceleration?
0.0056 m/s2