A vehicle expends an energy of 4000 J while moving at a constant speed of 10 `ms^(-1)`. What is the mass of vehicle ?

A car expends an energy of 25,000 J while moving at a constant speed of 5 ms^(-1) . What is the mass of car ?

A vehicle needs an engine of 7500 W to keep it moving with a constant velocity of 20 ms^(-1) on a horizontal surface. The force resisting the motion is

Suppose a boy is enjoying a ride on a merry-go-round which is moving with a constant speed of 10 ms^(-1) . It implies that the boy is

(Answer the following questions briefly and to the point :) A constant retarding force of 100 N is applied to a body of mass 10 kg moving initially with a speed of 30 ms^(-1) . What is the retardation of the body ?

A particle is moving along a circular path with a constant speed 10 ms^-1 .What is the magnitude of the change in velocity of the particle ,when it moves through an angle of 60^@ around the center of the circle ?

Calculate the kinetic energy of a body of mass 2 kg moving with speed of 10 m s^(-1)

What is the kinetic energy of a 10kg mass moving at a speed of 30 km h^(-1) in calorie?

A stone of mass 1 kg tied at the end of a string of length 1 m and is whirled in a verticle circle at a constant speed of 3 ms^(-1) . The tension in the string will be 19 N when the stone is (g=10 ms^(-1))

An object of mass 10kg moves at a constant speed of 10 ms^(-1) . A constant force, that acts for 4 sec on the object, gives it a speed of 2ms^(-1) in opposite direction. The force acting on the object is :

A machine gun bullet of mass m leaves the barel at a speed of 100 ms^(-1) and has a kinetic energy of 1000 J. what is the mass of bullet ?