A 10.0 kg block initially at rest is pulled to the right along a horizontal, frictionless surface by a constant horizontal force of 36 N. Find the speed of the block after it has moved 2.0 m.

In the figure, a 3.6 kg block slides along a track from one level to a higher level after passing through an intermediate valley. The track is frictionless until the block reaches the higher level. There a frictional force stops the block in a distance d. The block's initial speed is vo = 5.9 m/s, the height difference is h = L1 m, and u = 0, 625. Find d. u = 0-

A 121.79-kg skier starts with an initial speed of 24.77 m/s and coasts up a H=8.92-m-high rise as shown in the figure.  If her final speed at the top is 10.21 m/s, what is the angle of the slope in unit of degrees? Assume the coefficient of friction between her skis and the snow is 0.12 (Hint: Find the distance traveled up the incline assuming a straight-line path as shown in the figure.) Use g = 10 m/s2.

The drawing shows two boxes resting on frictionless ramps. One box is relatively light and sits on a steep ramp. The other box is heavier and rests on a ramp that is less steep. The boxes are released from rest at A and allowed to slide down the ramps. The two boxes have masses of 13 and 41 kg. If A and B are 4.0 and 0.5 m, respectively, above the ground, determine the speed of (a) the lighter box and (b) the heavier box when each reaches B. (c) What is the ratio of the kinetic energy of the heavier box to that of the lighter box at B? (a) VB = (b) VB= (c) KEheavier KElighter Number i Number Number VA = 0 m/s Απ' hA B hB Units Units VA = 0 m/s Units