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Q.

Passengers are pushed back when a bus starts suddenly. This is an example of which of the following?

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a

Newton's first law of motion

b

Newton's third law of motion

c

 Newton's second law of motion

d

Frictional force

answer is A.

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Detailed Solution

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Newton's first law of motion is also known as the law of inertia. The ability of a body to resist change is referred to as inertia.

According to Newton's first law of motion, A body remains in the state of rest or uniform motion in a straight line unless and until an external force acts on it.

When a bus suddenly starts moving, the lower body tends to be in motion, but the upper body still remains at rest due to the inertia of rest, causing a jerk and falling backwards.

Therefore, 'Newton's first law of motion' is the correct answer.

 

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