Force and Press...

Force of friction on an object lying on a table is 29.4 N. What is the mass of the object if the coefficient of friction between the object and the table surface is 0.3?

A bullet of mass 50 g is horizontally fired with a velocity of 200 ms^–1 from a pistol of mass 4 kg. What is the magnitude of recoil velocity of the pistol?

Two balls A and B of masses 2 kg and 3 kg are moving with velocities 3 ms^–1 and 2 ms^–1 respectively, towards each other. During the collision, they stick together. What will be the velocity of the combined balls after the collision?

A ball of mass 200 g is moving with a velocity of 6 ms^–1. It is brought to rest after travelling a distance of 2 m by applying a resistive force. What is the value of the resistive force applied?

An applied force of 24 N [forward] causes a steel block to move across a horizontal greased steel surface. What is the approximate value of mass of the block?
(Take coefficient of friction = 0.15) (g = 9.8 m/s²)