Free Fall Problem Set #1

A pumpkin is dropped from a 35 m building. What is its initial velocity?

• 9.8 m/s²

• 35 m

• 0 m/s

• 9.8 m/s

A ball is thrown upward in the air with an initial velocity of 40 m/s. How long does it take to reach the top of its path?

• ~4 seconds

• ~2 seconds

• ~6 seconds

• ~8 seconds

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

Which would hit the ground first if dropped from the same height in a vacuum (no air)—a feather or a metal bolt?

• the feather
• the metal bolt
• They would hit the ground at the same time.
• They would be suspended in a vacuum.

Tags

NGSS.HS-PS2-1

A freely falling object starts from rest. After falling for 6 seconds, it will have a speed of about

• 6 m/s

• 30 m/s

• 60 m/s

• 300 m/s

Tags

NGSS.HS-PS2-1

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
• 0 m/s²
• 0 m/s

Tags

NGSS.HS-PS2-1

A ball is thrown upwards and caught when it comes back down. In the absence of air resistance, the speed of the ball when caught would be 

• less than the speed it had when thrown upwards.
• more than the speed it had when thrown upwards.
• the same as the speed it had when thrown upwards.

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-2

NGSS.MS-PS3-1

NGSS.MS-PS3-5

What is terminal velocity?

• The speed an object dies at.

• The highest velocity an object reaches because air resistance equals (offsets) the force of weight.

• When an object reaches its final velocity of zero

• The velocity of an object after falling 10 seconds.

Tags

NGSS.MS-PS2-4

What is the acceleration of an object traveling upward during "free fall"?

• +9.8 m/s²

• -9.8 m/s²

• 9.8 m/s

• -9.8 m/s

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

How far does an object fall in 3 seconds when dropped?

• 44 m

• 10 m

• 3 m

• 29 m

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

How high does a ball travel when thrown upwards at 40 m/s?

• 40 m

• 82 m

• 4 m

• 1600 m

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-1