In a direct impact, loss in kinetic energy is given by ΔK=M1M22M1+M2⋅V1−V221−k2 with usual notations (except k). The quantity k will have dimensional formula
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a
M0L2T−2
b
MLT−1
c
M0L0T0
d
M0LT−1
answer is C.
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Detailed Solution
It is clear that k should be dimensionless1−k2=M0L0T0 Hence, [k]=M0L0T0Actually k is the coefficient of restitution.