1 | 2 | 3 | 4 | 5 | 6 |
7 | 8 |
Question 1
This question is about a bouncy ball, held at rest, 1.3m above the ground. |
a) | State the equation linking gravitational potential energy, mass, gravitational field strength, and height.
|
b) | The mass of the ball is 40 g and is held 1.3 m above the ground. Calculate the gravitational potential energy of the ball. The gravitational field strength on Earth is 9.8 N/kg.
|
c) | The ball is released and falls to the ground. State the kinetic energy of the ball just before it hits the ground. J
|
d) | Calculate the speed of the ball just before it hits the ground. Give your answer to 2 decimal places in m/s.
|
e) | Describe how the student could measure the final speed of the ball, just before it hits the ground.
|
f) | Using ideas about forces, explain why the measured value of speed is different to the calculated value.
|
|
1 | 2 | 3 | 4 | 5 | 6 |
7 | 8 |