Gravity and Gravitational Force

Multiple Choice

Gravity is a force of:

• Attraction

• Repulsion

Multiple Choice

Gravity is exerted by:

• Large object only

• Earth only

• All matter

Multiple Choice

How would moving objects closer together effect the gravitational force acting between two objects?

• Gravitational force would increase

• Gravitational force would decrease

Multiple Choice

How would removing half of each object affect the gravitational force acting between two objects?

• Gravitational force would increase

• Gravitational force would decrease

Multiple Choice

In which diagram would the gravitational forces between the objects be the strongest?

• A

• B

• C

Multiple Choice

Why do astronauts experience less gravitational force on the Moon than they do on Earth?

• The Moon is much more massive than Earth.

• The Moon is much less massive than Earth.

• The astronauts have less mass on the Moon.

• The astronauts weigh more on the Moon.

Multiple Choice

The mass of an object on Earth's surface and the mass of the same object on Jupiter's surface would be:

• The same

• Different

Multiple Choice

A ball is dropped from high above Earth's surface. Ignoring air resistance, calculate how much the ball's velocity has changed after falling for 2 seconds.

( $$\Delta v\ =\ 9.8\ \frac{m}{s^2}\ \times\ t$$  )

• 9.8 m/s downward

• 19.6 m/s downward

• 29.4 m/s downward

Multiple Choice

A ball is dropped from high above Earth's surface. Ignoring air resistance, calculate how much the ball's velocity has changed after falling for 6 seconds.

( $$\Delta v\ =\ 9.8\ \frac{m}{s^2}\ \times\ t$$  )

• 39.2 m/s downward

• 58.8 m/s downward

• 78.4 m/s downward