A 10 kg boy standing on a 40 kg boat floating on water is 20 m from the shore of the river. If the boy moves 8 m on the boat towards the shore, then how far is he from the shore.(Assume there is no friction between water and boat)?

Standing on an icy surface a man of mass 60 kg throws a stone of mass 3 kg horizontally at a velocity of 8 "m.s"^(-1) . How far does he slide back if the coefficient of sliding friction between the man and the icy surface is 0.02?

A body of mass 20 kg falls from a height of 20 m on the earth's surface. If the resistance offered by the surface is 10000 N , how far will the body penetrate? (g = 10 m cdot s^(-2) )

25 trees are plants in a straight line 5 metre apart from each other. To water them the gardener must bring water for each tree separately from a well 10 metre from the first tree in line with the trees. How far will he move in order to water all the trees beginning with the first if he starts from the well.