List of top Physics Questions on laws of motion asked in AFMC

A jet of water with a cross-sectional area a is striking against a wall at an angle $ \theta $ to the horizontal and rebounds elastically. If the velocity of water jet is v and the density is $ \rho , $ the normal force acting on the wall is

A $60 \,kg$ man stands on a spring scale in the lift. At some instant he finds, scale reading has changed from $60 \,kg$ to $50 \,kg$ for a while and then comes back to the original mark. What should we conclude?

A boat of mass $40\, kg$ is at rest. A dog of mass $4 \,kg$ moves in the boat with a velocity of $10\, m/s$. What is the velocity of boat?