A car moving at 16 m/s speeds up with a constant acceleration of 1.5 m/s² for 7 s. Find its final speed v.
Kinematics worksheet with answers
A train slows down uniformly from 27 m/s to 20 m/s in 17 s. How far does it travel in that time? Find s.
A driver moving at 80 km/h sees an obstacle. Her reaction time is 1.4 s, after which the car brakes with a constant deceleration of 7 m/s². Find the total stopping distance d from the moment she sees the obstacle.
A car speeding at a constant 21 m/s passes a police car standing still. At that moment the police car starts and accelerates uniformly at 2.5 m/s². How far from its starting point does the police car catch up? Find d.
A ball is thrown straight up at 18 m/s from the edge of a roof 25 m above the ground. Ignore air resistance and use g = 9.81 m/s². How long after the throw does it hit the ground? Find t.
A ball is thrown straight up at 10 m/s from the edge of a roof 10 m above the ground. Ignore air resistance and use g = 9.81 m/s². How long after the throw does it hit the ground? Find t.
Answer key
- 1. v = 26.5 m/s
- 2. s = 399.5 m
- 3. d = 66.38 m
- 4. d = 352.8 m
- 5. t = 4.744 s
- 6. t = 2.774 s
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