An ice block is projected vertically up with a velocity 20 `ms^(-1)`. The amount of ice that melt when it reaches the ground and if the loss of P.E. is converted into heat energy if the mass of ice block is 4.2 kg

A 42 kg block of ice moving on rough horizontal surface stops due to friction, after sometime. If the initial velocity of the decelerating block is 4ms^-1 , the mass of ice (in kg) that has melted due to the heat generated by the friction is (Latent heat of ice is 3.36xx10^5Jkg^ -1

A man of mass 60kg sitting on ice pushes a block of mass 12kg on ice horizontally with a speed of 5ms^(-1) The coefficient of friction between the man and ice and between block and ice is 0.2 If g =10ms^(2) the distance beteen man and the block when they come to rest is .

A person of mass 72kg sitting on ice pushes a block of mass of 30kg on ice horizontally with a speed of 12ms^(-1) .The coefficient of friction between the man and ice and between block and ice is 0.02 .If g=10ms^(-1) ,the distance between man and the block, when they come to rest is

A man of mass 60 kg sitting on ice pushes a block of mass of 12kg on ice horizontally with a speed of 5 ms^(-1) . The coefficient of friction between the man and ice and between block and ice is 0.2. If g =10 ms^(-2) , the distances between man and the block, when they come to rest is

A person of mass 72 kg sitting on ice pushes a block of mass of 30kg on ice horizontally with a speed of 12 ms^(1) . The coefficient of friction between the man and ice and between block and ice in 0.02. If g =10ms^2 , the distances between man and the block, when they come to rest is