Equations of Motion – Practice
1) A toy car accelerates from rest for 3 seconds at 0.4 m/s2. What is the toys final velocity?
2) If a police car initially travelling at 5 m/s pursues a speeding motorist by accelerating at 1.5 m/s2 for 8 seconds before catching up to them, how far does the police car travel in this time?
3) If an eagle achieves a final velocity of 25 m/s by accelerating at 3.5 m/s2 for 5 seconds, what was its initial velocity?
4) A car approaching a set of traffic lights is travelling at 14 m/s. The driver sees that the lights have turned red. It takes 4 seconds for the car to come to a complete stop.
a) What was the acceleration of the car over this time?
b) What distance did the car travel during this time?
1) 1.2 m/s
2) 88 m
3) 7.5 m/s
4a) 3.5 m/s2 in the opposite direction to which it was travelling (-3.5 m/s2) b) 28 m