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Two bodies of mass  and  are moving with same kinetic energy. If they are stopped by same retarding force, then

a)

Both bodies cover same distance before coming to rest

b)

If , the time taken to come to rest for body of mass  is more than that of body of mass

c)

If , then body of mass  has more momentum than that of mass

d)

All of the above


Question ID - 53883 | Toppr Answer

Two bodies of mass  and  are moving with same kinetic energy. If they are stopped by same retarding force, then

a)

Both bodies cover same distance before coming to rest

b)

If , the time taken to come to rest for body of mass  is more than that of body of mass

c)

If , then body of mass  has more momentum than that of mass

d)

All of the above

1 Answer - 5876 Votes

3537

Answer Key : (d) -

(d)

Work done by retarding force = change in kinetic energy

Since, retarding force  and kinetic energy of both bodies are same so, stopping distance will be same. Hence, (a) is correct.

Or

It means more is the mass, less is the initial speed

Or 

Hence, more is the mass, less is the time of stopping. Hence, (b) is correct

It means more is the mass, more is the momentum

Hence, (c) is correct.



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