A car moving at 10 m/s speeds up with a constant acceleration of 1.5 m/s² for 7 s. How far does it travel in that time? Find s.
Kinematics worksheet with answers
A stone is dropped from rest from a bridge 75 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 driver moving at 100 km/h sees an obstacle. Her reaction time is 0.5 s, after which the car brakes with a constant deceleration of 6 m/s². Find the total stopping distance d from the moment she sees the obstacle.
A plane starts from rest and accelerates uniformly at 2.75 m/s² along a runway. Find its speed v after 1700 m.
A ball is thrown straight up at 14 m/s from the edge of a roof 40 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 28 m/s² for 2 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 = 106.8 m
- 2. t = 3.91 s
- 3. d = 78.19 m
- 4. v = 96.7 m/s
- 5. t = 4.62 s
- 6. t = 14.34 s
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