Question

What happens when a penny is dropped from a height of 20 meters? A.it falls at a constant velocity B.its mass doubles for every second it falls C.the force of gravity causes it to accelerate D. it changes direction every 9.8 meters

Answer 1

I think it's either A or C because on B an object's mass can't change unless it is on a different planet, and on D it doesn't make sense unless the wind is blowing.

Answer 2

Answer: Option (c) is the correct answer.

Explanation:

When a penny is dropped from a height of 20 meters then it will achieve an acceleration.

As acceleration is the rate of change in velocity of an object with respect to time. Therefore, the velocity does not remain constant.

Whereas mass of the penny will remain the same as it will not get affected when it falls. Also, there will be no change in direction of the penny as it is falling only in one direction.

The acceleration of penny is due to the force of gravity.

Thus, we can conclude that the force of gravity causes it to accelerate.