Laws of Motion ...

Total impulse imposed by ball of mass 2 kg to the ball of mass 4 kg has the magnitude equal to

A gun of mass M fires a bullet of mass m with a velocity v relative to the gun. The average force required to bring the gun to rest in 0.5 sec. is

A ball of mass 250 g moving with 20 m/s strikes a vertical wall and rebounds along the same line with a velocity of 15 m/s. If the time of contact is 0.1 s, the force exerted by the wall on the ball is 

Total impulse imposed by a ball of mass $$2 kg$$ moving with the speed of $$10 m/s$$ in rightward direction to the ball of mass $$4 kg$$ moving with the speed of $$8 m/s$$ in the same direction is (The collision is perfectly elastic)

Calculate the impulse necessary to stop the car of mass 500 kg travelling at 72 kmph.

An impulse $$\vec { 1 }$$ changes the velocity of a particle from $$\vec { v } _ { 1 }$$ to $$\vec { v } _ { 2 }$$ . Kinetic energy gained by the particle is 

Find the tangent of angle of banking for a curved smooth road of radius  $$40 m$$  for a speed of  $$72 km / h$$   $$\left( { g }=10{ m }/{ s }^{ { 2 } } \right) .$$

Who asserted that the natural state of body is the state of rest

A ball of mass $$1$$ $$ \mathrm{kg}  $$ drops vertically on to the floor with a speed of $$ 25$$ $$ \mathrm{m} / \mathrm{s}  $$ . It rebounds with an initial velocity of $$10$$ $$ \mathrm{m} / \mathrm{s}  $$ . What impulse acts on the ball during contact?

A rubber band of length $$\lambda$$ has a stone of mass $$m$$ tied to its one end. It is whirled with speed $$v second$$ that the stone described a horizontal circular path. The tension $$T$$ in the rubber band is -