If the force on a rocket moving with a velocity of 300 m/s is 345 N, then the rate of combustion of the fuel is 

A car of mass 400 kg is pulling a coach of mass 300 kg with a force of 4500 N. If the coefficient of friction is 0.001, what is tension?

The mass of a lift is 2000 kg. When the tension in the cable is 28000 N, then its acceleration is

An explosion blows a rock into three parts. Two parts go off at right angles to each other. These two are, 1 kg first part moving with a velocity of 12 ms^-1 and 2 kg second part moving with a velocity of 8 ms^-1. If the third part flies off with a velocity of 4 ms^-1, its mass would be

A ball strikes a bat with velocity v. The ball has mass m and after striking it retraces its path. What is the impulse imparted by the bat?

A certain force applied to a mass m₁ gives it an acceleration of 15 m/s² .The same force applied to a mass m₂ gives it an acceleration of 10 m/sec² .If the two masses are fixed together and the same force is applied to the combination ,find the acceleration

A block of mass m is in  contact with the cart C as shown in the figure.

The coefficient of static friction between the block and the cart is μ. The acceleration α of the cart that will prevent the block from falling satisfies

In non-inertial frame, the second law of motion is written as

Two blocks P and Q are released at the top of a rough inclined plane so that P slides along the plane and Q falls down freely. Which will have higher velocity on reaching the ground?

A body of mass 10 kg falls vertically on a muddy ground with a velocity of 20 m/s and penetrates through a vertical depth of 0.3 m.Calculate the average force exerted by the muddy ground?Take g = 10 m/s² .