A ball is dropped from a height of 20m. How long does it take for the ball to reach ground?
Use SUVAT. Height is 20m, initial speed is 0m/s, acceleration is 10m/s^2, and you need to find time. Therefore use s = ut + 1/2 at^2, and rearrange to get a value for t as t = 2s.
LT
Related Physics GCSE answers
All answers ▸What is the difference between displacement and distance?
Resistors of 5 ohms and 10 ohms are connected in series with a battery supplying 3 volts. What is the total resistance ? And calculate the current in the circuit.
Describe the forces acting on an object on earth falling through the air, and how they change from when the object is first released into the air leading to terminal velocity.
What is meant by terminal velocity?