Acceleration and Free Fall

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

• 9.8 m/s²

• 35 m

• 0 m/s

• 9.8 m/s

The diagram represents...

• speeding up (faster)

• slowing down (slower)

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-5

Object is...

• constant speed

• speeding up (faster)

• slowing down (slower)

Tags

NGSS.MS-PS3-1

Galileo Galilei dropped two rocks of different mass from the top of the Leaning Tower of Pisa. Which rock will reach the ground first

• The bigger rock

• The smaller rock

• Two rocks reached the ground almost the same time

Tags

NGSS.MS-PS2-4

What is the acceleration of the falling person by assuming that no air resistance acting on him?

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NGSS.MS-PS2-2

NGSS.MS-PS2-4

Free fall is the motion of an object due to ________________ force only

What is the acceleration of an object in free fall near the Earth's surface?

• 9.8 m/s^2

• 0 m/s^2

• 4.9 m/s^2

• 19.6 m/s^2

Tags

NGSS.MS-PS2-4

If an object is in free fall, what forces are acting on it?

• Gravity only

• Gravity and air resistance

• Air resistance only

• No forces

Tags

NGSS.MS-PS2-4

• 0 m/s

• 15 m/s

• 9.8 m/s

• -9.8 m/s

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NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which of the following statements is true about free fall?

• All objects fall at the same rate regardless of mass

• Heavier objects fall faster than lighter ones

• Lighter objects fall faster than heavier ones

• Objects fall at different rates depending on their shape

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4