Why does a freely falling object has non-uniform motion. [1 MARK]

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Solution

Reason : 1 Mark

A body is said to be in uniform motion if it is moving in a straight line with constant velocity. A freely falling object accelerates due to gravitational force. So, it cannot move with a constant velocity.

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Q. A body moving with a constant speed in the same direction, on a frictionless surface has a uniform motion, while a freely falling object has a non-uniform motion because ___________.

Q. The potential energy of a freely falling object decreases progressively. Does this violate the law of conservation of energy? Why? [3 MARKS]

A freely falling object travels 4.9 m in 1st second, 14.7 m in 2nd second, 24.5 m in 3rd second, and so on. This data shows that the motion of a freely falling object is a case of :

(a) uniform motion (b) uniform acceleration

What type of motion, uniform or non-uniform, is exhibited by a freely falling body? Give reason for your answer.

Give reasons:

(1) Distance and displacement are different concepts.

(2) An object at rest can be considered to have uniform motion.

(3) When a body falls freely to the ground, its motion has an uniform acceleration.

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Why does a freely falling object has non-uniform motion. [1 MARK]

Reason : 1 Mark A body is said to be in uniform motion if it is moving in a straight line with constant velocity. A freely falling object accelerates due to gravitational force. So, it cannot move with a constant velocity.

Reason : 1 Mark

A body is said to be in uniform motion if it is moving in a straight line with constant velocity. A freely falling object accelerates due to gravitational force. So, it cannot move with a constant velocity.