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 |
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 |
(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.