A 2.5 kg body travelling at 15 m/s strikes a stationary 5 kg body, and they stick. Find common velocity (m/s).
Physics · Mixed Chapter
JEE Main Practice

Question

A 2.5 kg body travelling at 15 m/s strikes a stationary 5 kg body, and they stick. Find common velocity (m/s).

G1 Physics · Accepted Answer

Step 1: Linear momentum is conserved during collision. Step 2: Initial momentum p=2.5×15+5×0=37.5 kg·m/s. Step 3: Combined mass=2.5+5=7.5 kg. Step 4: Common speed v=37.5/7.5=5 m/s.