Acceleration, Graphs Free Fall

A baseball is thrown up into the air. What happens to the velocity as the ball rises in the air?

• the velocity increases

• the velocity decreases

• the velocity remains constant

Tags

NGSS.HS-PS2-1

A ball is thrown upward with an initial speed of 30m/s. At what location will the ball be moving downward with a speed of 20m/s

• A

• B

• E

• F

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.MS-PS2-4

• 60 m/s

• 50 m/s

• 58 m/s

• 58.86 m/s

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

A ball is dropped from a helicopter. How far does it fall after 3 seconds? Use g=10m/s²

• 0 m

• 10 m

• 45 m

• 90 m/s

• 180 m/s

Tags

NGSS.HS-PS2-1

The standard acceleration due to gravity (or standard acceleration of free fall), is the nominal gravitational acceleration of an object in a vacuum near the surface of the Earth (ignores the effects of air resistance and friction). It is defined by standard as:

• 9.8 m/s.

• 9.8 m.

• 9.8 m/s².

• 9.8 s.

Tags

NGSS.HS-PS2-4

If you throw a baseball straight up, what is its velocity at the highest point?

• 9.8 m/s²

• -9.8 m/s

• 9.8 m/s

• 0 m/s

Tags

NGSS.HS-PS2-1

Do free falling objects move at constant velocity or do they accelerate?

• Falling objects accelerate at 9.8 m/s² toward the center of the Earth.

• Falling object move at constant velocity.

• Falling objects accelerate at 100 m/s².

• It depends on the mass: heavy objects accelerate, light objects do not.

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

A textbook is dropped from a second floor window and falls to the ground. What direction is the acceleration?

• upward

• downward

Tags

NGSS.HS-PS2-1

A student drops a ball off the top of building and records that the ball takes 2.33s to reach the ground. What is the ball's speed just before striking the ground? use g=10m/s²

• 0 m/s

• 10 m/s

• 23.3 m/s

• 12.33 m/s

Tags

NGSS.HS-PS2-1