Two blocks of masses 10 kg and 20 kg moving at speeds of 10 m s–1 and 20 m s–1 respectively in opposite directions, approach each other and collide. If the collision is completely inelastic, find the thermal energy developed in the process.
Given:
Mass of blocks:10kg and 20kg
Speeds of blocks:10m/s and 20m/s
Formula used:
Momentum=mv
M=mass
V=velocity
Conserving momentum
Momentum initial=momentum final
10× 10-20×20=30× final velocity
Final velocity=10m/s
Thermal energy=change in kinetic energi
Thermal energy=3000J