Tun halls of equal masses undergo a head-on collision with speeds 6 m/s moving in opposite direction. If the coefficient
A particle falls from a height 'h' upon a fixed horizontal plane and rebounds. If e = 0.2 is the coefficient of
the total distance travelled and time taken during its bouncing. (e = 0.5
restitution. Find the total distance travelled before rebounding has stopped.
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Answered by
2
Answer:
Let speed of balls are v
1
and v
2
.
There is no external force acting, momentum will be conserved.
m
1
u
1
+m
2
u
2
=m
1
v
1
+m
2
v
2
⇒m×6−m×6=mv
1
+mv
2
⇒v
1
=−v
2
Coefficient , e=−
u
1
−u
2
v
1
−v
2
⇒
3
1
=−
6+6
v
1
−v
2
⇒v
1
=−2m/s
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