A car moving at 12 m/s speeds up with a constant acceleration of 2 m/s² for 11 s. Find its final speed v.
Kinematics worksheet with answers
A car speeds up uniformly from 10 m/s to 14.5 m/s in 9 s. Find the acceleration a.
A car driving at 100 km/h brakes with a constant deceleration of 3.5 m/s² until it stops. How long does braking take? Find t.
A car speeding at a constant 23 m/s passes a police car standing still. At that moment the police car starts and accelerates uniformly at 4 m/s². How far from its starting point does the police car catch up? Find d.
A stone is dropped from rest into a well. The splash is heard 3.8 s after the stone is released. The speed of sound is 343 m/s; ignore air resistance and use g = 9.81 m/s². Find the depth d of the well.
Ball A is dropped from rest from a height of 30 m. At the same instant ball B is thrown straight up from the ground directly below at 15 m/s. Ignore air resistance and use g = 9.81 m/s². When do the balls meet? Find t.
Answer key
- 1. v = 34 m/s
- 2. a = 0.5 m/s²
- 3. t = 7.937 s
- 4. d = 264.5 m
- 5. d = 64.04 m
- 6. t = 2 s
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