NEET Physics — Laws of Motion

Two billiard balls, each of mass \( 0.1 \, \text{kg} \), moving in opposite directions at \( 5 \, \text{m/s} \), collide and rebound with the same speed. What is the impulse on one ball due to the other?

A \( 1300 \, \text{kg} \) car turns on a banked road (\( \theta = 15^\circ \)) with radius \( 50 \, \text{m} \) at the optimum speed to avoid friction. What is the speed? (Take \( g = 10 \, \text{m/s}^2 \), \( \tan 15^\circ \approx 0.268 \))

A \( 50 \, \text{kg} \) man in a lift accelerating upward at \( 2 \, \text{m/s}^2 \) stands on a scale. What is the reading? (Take \( g = 10 \, \text{m/s}^2 \))

A \( 2500 \, \text{kg} \) rocket accelerates at \( 8 \, \text{m/s}^2 \) upward while ejecting gas at \( 50 \, \text{kg/s} \) with speed \( 100 \, \text{m/s} \) relative to the rocket. What is the total thrust? (Take \( g = 10 \, \text{m/s}^2 \))

A \( 60 \, \text{kg} \) man in a lift accelerating upward at \( 1.5 \, \text{m/s}^2 \) stands on a scale. What is the reading? (Take \( g = 10 \, \text{m/s}^2 \))