2.1 | Newton's First Law

Kal-El's mass on Krypton is 120 kg. If the gravitational force on Krypton is, I mean, was 4 times greater than that of Earth's, his mass would be:

• 120 kg

• 480 kg

• 30 kg

• 60 kg

If an astronaut has a mass of 88 kg on the Earth, her mass up in orbit on the International Space Station would be:

• 88 kg

• 0 kg

• 44 kg

• You can't tell because she would be weightless.

On Earth, SpaceGodzilla has a mass of approximately 23,000 kg. If the gravity near the black hole when he came from is 1,000,000 times that of Earth's, his mass at the black hole is:

• 23,000 kg

• 23,000,000,000 kg

• Infinite since he's near a black hole.

• Objects have no mass when they're in space.

Tags

NGSS.MS-PS2-4

An object moving rightward at a constant speed has a force pushing to the right

• True

• False

Tags

NGSS.MS-PS2-2

A baseball moving at 100 mph has more force acting on it than one moving at 90 mph.

• True

• False

Tags

NGSS.HS-PS2-1

A 20 kg object needs how big of a force to keep moving?

• 0 N

• 20 N

• 200 N

• 2 N

Tags

NGSS.MS-PS2-2

A 6 kg bowling ball needs how much force to move down the lane?

• 0 N

• 6 N

• 60 N

• 10 N

Tags

NGSS.MS-PS2-2

Newton's First Law applies to moving objects.

• True

• False

Newton's First Law only applies to objects at rest.

• True

• False

An unbalanced force is needed to change how something is moving.

• True

• False

Tags

NGSS.MS-PS2-2