JEE Main 2024 Physics question
A bullet of mass 50 g is fired with a speed 100 m/s on a plywood and emerges with 40 m/s. The percentage loss of kinetic energy is:
Answer: (D)
Solution
Loss = (100² − 40²)/100² = 0.84.
A bullet of mass 50 g is fired with a speed 100 m/s on a plywood and emerges with 40 m/s. The percentage loss of kinetic energy is:
Loss = (100² − 40²)/100² = 0.84.