The box lists some types of energy.
| chemical | elastic | gravitational | kinetic | thermal |
The passage describes the process of launching a ball vertically upwards from a spring-loaded launcher. Use words from the box to complete the passage. Each word may be used once, more than once, or not at all.
As the compressed spring in the launcher is released, its \text{________________________} energy is mostly transferred to \text{________________________} energy of the ball.
As the ball rises upwards through the air, its \text{________________________} energy is mostly transferred to \text{________________________} energy.
The launcher contains a spring. A student investigates a similar spring to see if it obeys Hooke's law.
She measures the extension of the spring for a range of different stretching forces.
Describe how the student could measure the extension of the spring.
The student finds that the spring does obey Hooke's law. Sketch a graph of her results on the axes below.
