A truck and a car are moving with equal velocity. On applying brakes, both will stop after a certain distance, then?
Correct answer: B. Car will cover less distance before stopping
- A. Truck will cover less distance before stopping
- B. Car will cover less distance before stopping
- C. Both will cover equal distance
- D. None of the mentioned
Explanation
For same initial speed, stopping distance under same retarding force depends on mass via kinetic energy; the heavier truck stores more KE and thus will require a larger stopping distance, so the lighter car stops sooner.
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About Work and Energy
Work transfers energy when a force causes displacement, while kinetic energy, gravitational potential energy and power describe motion, position and the rate of energy transfer. The work-energy theorem links net work with change in kinetic energy, and efficiency accounts for energy losses rather than treating them as energy destruction.
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