A cuboidal car of height 3 m slips down a smooth incline. A bolt released from the center of its roof P falls relative to the car. The distance from the roof center where it hits the floor is:
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Question

A cuboidal car of height 3 m slips down a smooth incline. A bolt released from the center of its roof P falls relative to the car. The distance from the roof center where it hits the floor is:

G1 Physics · Accepted Answer

In the accelerating car frame the effective gravity is perpendicular to the incline, so the bolt falls straight to the floor relative to the car by the car height, 3 m. Option C.