Find the acceleration of the toboggan after it has reached its highest point and is sliding down the hill. Find the acceleration of the toboggan after it has reached its highest point and is sliding down the hill. Assume +x axis directed up the hill.
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Find the acceleration of the toboggan after it has reached its highest point and is sliding down the hill.
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- A block slides down an inclined plane of slope angle θ with constant velocity. It is then projected up the same plane with an initial speed v0. How far up the incline will it move before coming to rest? Will it slide down again?A penguin slides at a constant velocity of 1.4m/s down an inclined sandy scarface. The incline slopes above the horizontal at an angle of 6.9degrees.At the bottom of the incline, the penguin slides onto a horizontal patch of sand. The coefficient of kinetic friction between the penguin and the sand is the same for the horizontal patch. Calculate how much time is required for the penguin to slide to a halt after entering the horizontal patch of ice.The shot put is a trackand- field event in which athletes throw a heavy ball— the shot—as far as possible. The best athletes can throw the shot as far as 23 m. Athletes who use the “glide” technique push the shot outward in a reasonably straight line, accelerating it over a distance of about 2.0 m. What acceleration do they provide to the shot as they push on it? Assume that the shot is launched at an angle of 37°, a reasonable value for an excellent throw. You can assume that the shot lands at the same height from which it is thrown; this simplifies the calculation considerably, and makes only a small difference in the final result.
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- A child on a bridge throws a rock straight down to the water below. The point where the child released the rock is 94 m above the water and it took 1.2 s for the rock to reach the water. Determine the rock's velocity (magnitude & direction) at the moment the child released it. Also determine the rock's velocity (magnitude & direction) at the moment it reached the water. Ignore air drag.A penguin slides at a constant velocity of 1.4 m/s down an inclined sandy surface. The incline slopes above thehorizontal at an angle of 6.9. At the bottom of the incline, the penguin slides onto a horizontal patch of sand.The coefficient of kinetic friction between the penguin and the sand is the same for the incline as for the horizontalpatch. Calculate much time is required for the penguin to slide to a halt after entering the horizontal patch of sand.Consider a skier heading down a 8.5° slope. Assume the coefficient of friction for waxed wood on wet snow is μk=0.10 and use a coordinate system in which down the slope is positive. Calculate the acceleration of the skier in m/s2 and determine the angle of a slope the skier could coast on at a constant velocity in degrees.
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