A body of mass 4 kg moving with velocity 
collides with another body of mass 6 kg at rest. If two bodies stick together after collision, then the loss of kinetic energy of system is
a)
Zero
b)
288 J
c)
172.8 J
d)
144 J
A body of mass 4 kg moving with velocity collides with another body of mass 6 kg at rest. If two bodies stick together after collision, then the loss of kinetic energy of system is
a)
Zero
b)
288 J
c)
172.8 J
d)
144 J
Question ID - 51941 | SaraNextGen Top Answer
A body of mass 4 kg moving with velocity collides with another body of mass 6 kg at rest. If two bodies stick together after collision, then the loss of kinetic energy of system is
a)
Zero
b)
288 J
c)
172.8 J
d)
144 J
|
A body of mass 4 kg moving with velocity |
|||||||
|
a) |
Zero |
b) |
288 J |
c) |
172.8 J |
d) |
144 J |
1 Answer
127 votes
Answer Key / Explanation : (c) -
(c)
In an inelastic collision, kinetic energy is not conserved but the total energy and momentum remains conserved.
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Momentum before collision
Or 
Kinetic energy before collision 
Kinetic energy after collision 
=115.2 J
Loss in kinetic energy=288 J-115.2 J
=172.8 J
127 votes
Answer Link
127