Question

a metal ball falls from a height of 10 metre and it reflected upto 2.5m . then find out what is the collision constant

Answer 1

collision constant e = h₂ / h₁ = 2.5/10 = 0.25

Answer 2

Concepts :- when a ball from a height of H m and it reflects upto h metre then,
coefficient of restitution = collision constant = $\sqrt{\frac{h}{H}}$

here metal fall from height of 10m
e.g., H = 10m
and it reflects upto 2.5 m e.g., h = 2.5 m
so, collision constant = $\sqrt{\frac{2.5}{10}}$
collision constant = 1/2 = 0.5