15) What is the retardation of a car moving with a velocity of 50 km/hr is brought to rest in 45 seconds?
Answer is:
0.30 m/sec2
Related Speed and Velocity, Work, Power and Energy MCQ with Answers
Answer is:
14 metre/sec2
Answer is:
20 m
Answer is:
Power
Explanation:
Power is the rate of doing work or workdone per unit time. In S.I. system of units, the unit of power is watt (briefly written as W) which is equal to 1 N-m/s or 1 J/s.
Generally a bigger unit of power called kilowatt (briefly written as kW) is used which is equal to 1000 W.
Answer is:
Energy
Explanation:
Energy is defined as the capacity to do work.