Calculate the angular speed of a car which rounds a curve of radius 8 m at a speed of 50 km/h.

Mass of an electron is 9xx10^(-31) kg. It revolves round the nucleus of an atom in a circular orbit of radius 4.0 Å with a speed of 6 xx 10^(6) m.s^(-1) . Calculate the linear kinetic energy and the angular momentum of the electron .

The roadway bridge over a stream is in the form of an arc of a circle of radius 50 m. What is the maximum speed with which a car can cross the bridge without leaving the ground at the highest point?

A jet airplane travelling at the speed of 500 km h^(-1) ejects its products of combustion at the speed of 1500 km h–1 relative to the jet plane. What is the speed of the latter with respect to an observer on the ground ?

A man travels a certain distance with a uniform speed of 5 km/h ad returns the same distance with a uniform speed of 4km/h. What is the average speed of the man?

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 ms^(-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 car is moving along a circular path of radius 20 m with a speed of 40 km cdot h^(-1) . Find its angular velocity.

A car moving with a speed of 50 "km.h"^(-1) can be stopped by brakes after at least 6 m. What will be the minimum stopping distance, if the same car is moving at a speed of 100 "km.h"^(-1) ?