Plase give ans fast of.

(i) Rohan feels jerk on application of sudden brakes could be explained on the basis of Newton's first law of motion. Option a is correct
Newton's first law states that if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.
 F=maF=2000×4 F=8000N

Option c is correct

(iii) The car slows down with brakes application, but our body remains to continue in the same state of motion because of its inertia.

If brakes are applied all of a sudden in a moving car, passengers automatically lean forward.

Option a is correct

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