free fall

A textbook is dropped from a second floor window and falls to the ground. What happens to the velocity as the book falls to the ground

• the velocity increases

• the velocity decreases

• the velocity remain constant

Tags

NGSS.HS-PS2-1

A textbook is dropped from a second floor window and falls to the ground. What happens to the acceleration as the book falls to the ground

• the acceleration increases

• the acceleration decreases

• the acceleration remains constant

Tags

NGSS.HS-PS2-1

A baseball is thrown up into the air. What direction is the velocity of the ball?

• upward

• downward

Tags

NGSS.HS-PS2-1

A baseball is thrown up into the air. What direction is the acceleration of the ball?

• upward

• downward

Tags

NGSS.HS-PS2-1

The acceleration of a freely falling body on Earth is

• 9.8 m/s.

• 9.8 m.

• 9.8 m/s².

• 9.8 s.

Tags

NGSS.HS-PS2-4

Heavier objects free fall faster than lighter objects.(in the absence of the air resistance)

• True

• False

Tags

NGSS.HS-PS2-1

The state that exists when the only force acting on an object is gravity is called

• free fall

• inertia

• acceleration

• momentum

Tags

NGSS.MS-PS2-4

Satellites in orbit around the Earth travel in almost circular path because Earth is

• centripetal

• free falling

• curved

• massive

Tags

NGSS.HS-ESS1-4

NGSS.HS-PS2-4

If you could turn off a centripetal force, ___________ would cause the object to fly off in a straight line.

• inertia

• momentum

• Earth

• force

Tags

NGSS.MS-PS2-2

why does a bungee jumper feel weightless on their way down?

• Because of Lack of support force as they fall

• because they are really weightless

• because their mass is negligible as they fall

• because they are falling at constant velocity

Tags

NGSS.HS-PS2-1