Out of 500 car owners investigated,400 owned car A and
200 owned car B,50 owned both A and B cars. Is this
data correct?

Assertion : Adiabatic expansion of a gas decreases its internal energy. Reason : Expansion work is done by the gas using its own internal energy. : If both assertion and reason are true and reason is the correct explanation of assertion, If both assertion and reason are true and reason is not the correct explanation of assertion, If assertion is true, but reason is false, If both assertion and reason are false

Two cars A and B travelling with speed 20m/s and 10m/s respectively applied brakes, so that A comes to rest in 15 second and B in 7.5s . In the above process, the wear and tear of which the cars get affected more?

A car moving along a straight highway with speed of 126 km h^-1 is brought to a stop within a distance of 200 m. What is the retardation of the car (assumed uniform), and how long does it take for the car to stop?

On a two lane road, car A is travelling with a speed of 36 km h −1 . two cars B and C approach car A in opposite directions with a speed of 54 km h −1 each. At a certain instant, when the distance AB is equal to AC, both being 1 km, B decides to overtake A before C does. What minimum acceleration of car B is required to avoid an accident?

Two cars A and B travel from the same point and in the same direction. A is travelling at a speed of 30 k(m) / hour and B at a speed of 40 (km) / hour . After 4 hours, what is the distance between the cars? How far the cars would be if they travelled in opposite direction?