Buttets are fired at regular intervals of 10s from an armoured car A moving with a speed of `10ms^(-1)`towards B. At what interval will an officer seated in car B and dashing with a speed of `20ms^(-1)` towards A hear the report ? Vleocity of sound `=340ms^(-1)` and velocity of wind `=5ms^(-1)` in the direction BA.

Bullets are fires at regulart intervals of 10sec. from an armoured car A moving with a speed of 36km// hour . At what interval with an officer seated in a car B hear the report when the car B is stationary and car A is moving towards car B. Velocity of sound =330 metre // sec. and velocity of wind =10 metres // sec in the direction AB.

bullets are fixed at regualr intervals of 10 second from a car moving with a speed of 30 ms^(-1) towards another car approaching with a speed of 60 m/s . The interval at which the firing can be reported is (Speed of sound = 330 ms^(-1)

bullets are fixed at regualr intervals of 10 second from a car moving with a speed of 30 ms^(-1) towards another car approaching with a speed of 60 m/s . The interval at which the firing can be reported is (Speed of sound = 330 ms^(-1)

A man is driving a car at a speed of 72 kmph towards a hill. He sounds the horn and hears its echo after 2 s. At what distance from the hill the horn was sounded. (Velocity of sound = 340 ms^(-1) )

A car travelling with a speed of 2ms^-1 increases its speed to 10ms^-1 in a time interval of 4s. What is the acceleration of car?

A car covers half of its journey with a speed of 10ms^(-1) and the other half by 20 ms^(-1) . The average speed of car during the total journey is