Free Fall: Partner Practice

What happens to the velocity of a ball as it is dropped off a cliff? 

• It decreases at a uniform rate 
• It increases at a uniform rate 
• It is constant 
• It increases at a non-uniform rate

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

In a normal environment, why does a bowling ball and feather hit the ground at different times when dropped from the same height?

• They don't; they hit the ground at the same time.
• One is more dense than the other.
• One is heavier than the other.
• Air resistance 

A ball is thrown up in the air with an initial velocity of 40 m/s. What is the ball's velocity after 2 seconds? 

• 0 m/s 
• 20 m/s traveling upward
• 20 m/s traveling downward
• 40 m/s traveling downward

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

Which would fall with greater acceleration in a vacuum—a leaf or a stone?

• the leaf
• the stone
• They would accelerate at the same rate.
• It is difficult to determine without more information.

Tags

NGSS.HS-PS2-1

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

• 9.8 m/s²
• 9.8 m/s
• 0 m/s²
• 0 m/s

Tags

NGSS.HS-PS2-1

When there is no air resistance, objects of different masses dropped from rest

• fall with equal accelerations and with equal displacements.
• fall with different accelerations and with different displacements.
• fall with equal accelerations and with different displacements.
• fall with different accelerations and with equal displacements.

Tags

NGSS.HS-PS2-1

If a freely falling object were somehow equipped with a speedometer, its speed reading would increase each second by 

• about 5 m/s.
• about 10 m/s.
• about 15 m/s.
• a rate that depends on its initial speed.

Tags

NGSS.HS-PS2-4

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 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