A trolley car starts from rest at the top of a hill as shown in figure -3.9 and moves down the curved track. Determine its speed as it reaches the bottom. Assume that the work done by frictional forces is negligible.

A block of mass 1 slides down a curved track that is one quadrant of a circle of radius 1m. Its speed at the bottom is 2m/s. The work done by frictional force is:

A block of mass 1 kg slides down a vertical curved track that is one quadrant of a circle of radius 1m. Its speed ast the the bottom si 2 m//s . The work done by frictional force is :

A block of mass 1 kg slides down a vertical curved track that is one quadrant of a circle of radius 1m. Its speed ast the the bottom si 2 m//s . The work done by frictional force is :

A skier starts from rest at the top of a ski slope and skis downhill. Find the skier's speed after her elevation decreases by 10m, assuming no work is done by friction or air resistance.

A skier starts from the top of a hill with speed 5m//s and slides down the hill of vertical height 60 m as shown. Neglect friction. Find his speed at the bottom.

A body of mass m is released from the top of a rough inclined plane as shown in figure. If the frictional force be F, then body will reach the bottom with a velocity

A block of mass 1 kg is placed at the point A of a rough track shown in the figure. If slightly pushed towards right, it stops at the point B of the track. The work done by the frictional force on the block during its transit from A to B is