A cycle together with its rider weighs 100 kg. How much work is needed to set it moving at 3 m/s `(AS_(1))`

Find the mass of a body which has 5J of kinetic energy while moving at a speed of 2m/s (AS_(1))

A scooter weighing 150 g together with its rider moving at 36 km/hr is to take a turn of radius 30 m. What horizontal force on the scooter is needed to make the turn possible?

Four charges are arranged at the comers of a square ABCD of side d, as shown in Fig. a. Find the work required to put together this arrangement b. A charge q_(0) is brought to the centre E of the square, the four charges being held fixed at its corners. How much extra work is needed to do this?n

small block of mass 200 g is kept at the top of a frictionless incline which is 10 m long and 3.2 m high. How much work was required to lift the block from the ground nd put it at the top .

A hoop of radius 2m weights 100 kg. It rolls along a horizontal floor so that its centre of mass has speed of 20 cm/s. How much work has to be done to stop it ?

A box is pushed through a distance of 4m across a floor offering 100N resistance. How much work is done by the resisting force ?

The bob of a simple pendulum of length 1 m has mass 100g and a speed of 1.4 m/ s at the lowest point in its path. Find the tension in the string at this moment. Take g=9.8 m//sec^(2) (AS_(1))