A car moving with a speed of 126`kmh^-1` is brought to stop within a distance of 200 m. What is its retardation and how long it takes for the car to stop ?

A car moving along a straight highway with a 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?

The driver of a car moving with a velocity 60 km per hours observes ahead a child at a distance of 101m. He immediately applies brake and the car stops just 1m before the child. Find the time required to stop the car.

Two cars are moving in the same direction with the same speed ( = 30km/hr ). They are separated by a distance of 5 km. What is the speed of a car moving in the opposite direction if it met these cars at an interval of 4 minutes?

On a two-lane road, car A travelling with a speed of 15ms^-1 is approached by two cars B and C moving with speed 20 ms^-1 each in opposite directions. At an instant when the distance AB is equal to AC , both being 700 m, B decides to overtake A before C does. Find the minimum acceleration required by B to avoid accident.

A train moving with speed 72 Km/hr blows its whistle of 200 Hz.What frequency is heard by a stationary observer?[velocity of sound in air = 330 m(s)^-1 ]

A boy standing on a stationary lift (open from above) throws a ball upwards with the maximum initial speed he can, equal to 49 m/s. How much time does the bail take to return to his hands? If the lift starts moving up with a uniform speed of 5 m/s and the boy again throws the ball up with the maximum speed he can, how long does the ball take to return to his hands?

Thief's car is moving with a speed of 10m/s . A police van chasing the car with a speed of 5 ms^-1 fires a bullet at the thief's car with muzzle velocity 72km/h. The speed with which the bullet hits the car is

A police van moving on a highway with a speed of 30 km h_ 1 fires a bullet at a thief’s car speeding away in the same direction with a speed of 192 km h^-1 . If the muzzle speed of the bullet is 150 m s^1 with what speed does the bullet hit the thief’s car ? (Note: Obtain that speed which is relevant for damaging the thief’s car).

A police van moving on a highway with speed 30 kmh^-1 fires a bullet at a theif's car speeding away in the same direction with a spped of 190 kmh^-1 . If the muzzle spped of the bullet is 360kmh^-1 , with what speed does the bullet hit the thief's car?

A police van moving on a highway with speed 30 kmh^-1 fires a bullet at a theif's car speeding away in the same direction with a spped of 192 kmh^-1 . If the muzzle spped of the bullet is 150ms^-1 , at what speed does the bullet hit the thief's car?