A train slows down uniformly from 20 m/s to 8 m/s in 20 s. How far does it travel in that time? Find s.
Kinematics worksheet with answers
A stone is dropped from rest from a bridge 20 m above the water. Ignore air resistance and use g = 9.81 m/s². How long does it take to reach the water? Find t.
A car speeding at a constant 22 m/s passes a police car standing still. At that moment the police car starts and accelerates uniformly at 3 m/s². How long does it take the police car to catch up? Find t.
A car driving at 80 km/h brakes with a constant deceleration of 5 m/s² until it stops. How long does braking take? Find t.
A model rocket is launched straight up from rest. Its engine gives it a constant upward acceleration of 26 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. Find the greatest height hmax the rocket reaches.
A tram starts from rest and accelerates at 2 m/s² for 10 s, then runs at constant speed for 13 s, and finally brakes at 2.5 m/s² until it stops. Find the total travel time t.
Answer key
- 1. s = 280 m
- 2. t = 2.019 s
- 3. t = 14.67 s
- 4. t = 4.444 s
- 5. hmax = 47.45 m
- 6. t = 31 s
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