A train slows down uniformly from 28 m/s to 8 m/s in 14 s. How far does it travel in that time? Find s.
Kinematics worksheet with answers
A train slows down uniformly from 15 m/s to 3 m/s in 6 s. How far does it travel in that time? Find s.
A driver moving at 100 km/h sees an obstacle. Her reaction time is 0.9 s, after which the car brakes with a constant deceleration of 5 m/s². Find the total stopping distance d from the moment she sees the obstacle.
A car driving at 90 km/h brakes with a constant deceleration of 6 m/s² until it stops. Find the braking distance s.
A ball is thrown straight up at 9 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 model rocket is launched straight up from rest. Its engine gives it a constant upward acceleration of 36 m/s² for 1 s, after which the engine stops and the rocket moves freely. Ignore air resistance and use g = 9.81 m/s². How long after launch does it hit the ground? Find t.
Answer key
- 1. s = 252 m
- 2. s = 54 m
- 3. d = 102.2 m
- 4. s = 52.08 m
- 5. t = 3.354 s
- 6. t = 8.809 s
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