Calcualte the impulse necessary to slope 1500 kg car travelling at `90kmh^(-1)`.

Calculate the work required to be done to stop a car of 1500 kg moving at a velocity of 60 k h^-1 .

What is the de-Broglie wavelength of a bullet of mass 0.040 kg travelling at the speed of 1.0km/s.

in a cold climate water gets frozen causing damage to the radiator of a car . Ethylene glycol is used as an antifreezing agent . Calculate the amount of ethylene glycol to be added to 4kg of water to prevent it from freezing at -6^@ C . ( K_f for water 1.85 Km^-1 ).

A driver of a car travelling at 52kmh^(-1) applies the brake and accelerates uniformly in opposite direction. The car stop in 5 s. Another driver going at 3 km h^(-1) applied his brakes slowly and stop in 10 s. On the same graph paper plot the speed versus time graph for the two cars. Which of the two cars travelled farther after the brakes were applied ?

A car travelling at the speed of 108 km//h takes 4 s to stop on applying brakes. Calculate the force acting on the car after applying brakes. Total mass of the(including passengers) is 1000 kg.

On a 100km track, a train travels the first 30 km at a uniform speed of 30 kmh^(-1) . How fast must the train travel the next 70 km so as to averge the next 40km h^(-1) for entire trip.