A puck is released on an air table inclined by 0.1rd with respect to horizontal. By applying the principle of conservation of the mechanical energy of the system ,calculate the velocity of the puck after 40 cm journey along a line of greatest slope.

Answer 1

the increase in kinetic energy is from (equal to) the decrease in gravitational potential energy

v^2 = 2 g h = 2 * 980 * 40 sin(.1 rd)