The Role of Gravity

Multiple Choice

What is the weight of a box of 2kg on the Earth?

• 2 kg

• 2 N

• 20 kg

• 20 N

Open Ended

The gravitational field strength of the Moon is 1.6 N/kg. What is the weight of the box of 2 kg on the Moon?

Open Ended

Callisto is a moon of Jupiter. The mass of Callisto is three times less than the planet Mercury, although both have the same diameter. State whether the force of gravity on Callisto is more than, less than, or the same as on Mercyry. Explain your answer.

Open Ended

What will happen if Earth has no gravity?

Poll

This is the picture of ISS (International Space Station), which is in orbit around the Earth. Is there any gravity force acting on ISS?

• Yes

• No

• Maybe