A car moving at 12 m/s speeds up with a constant acceleration of 2 m/s² for 8 s. How far does it travel in that time? Find s.
Kinematics worksheet with answers
A stone is dropped from rest from a bridge 55 m above the water. Ignore air resistance and use g = 9.81 m/s². Find its speed v just before it hits the water.
A driver moving at 45 km/h sees an obstacle. Her reaction time is 0.8 s, after which the car brakes with a constant deceleration of 5.5 m/s². Find the total stopping distance d from the moment she sees the obstacle.
A plane needs a speed of 300 km/h to take off and the usable runway is 1600 m long. Starting from rest, what constant acceleration a does it need?
A tram starts from rest and accelerates at 2.5 m/s² for 6 s, then runs at constant speed for 25 s, and finally brakes at 4 m/s² until it stops. Find the total travel time t.
A ball is thrown straight up at 10 m/s from the edge of a roof 20 m above the ground. Ignore air resistance and use g = 9.81 m/s². Find the greatest height hmax above the ground.
Answer key
- 1. s = 160 m
- 2. v = 32.85 m/s
- 3. d = 24.2 m
- 4. a = 2.17 m/s²
- 5. t = 34.75 s
- 6. hmax = 25.1 m
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