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1)A ball of mass 4 kg rolls up a slope at an angle of 25° to the horizontal. The coefficient of friction is 0.3. (i) Given the initial speed is 9 m s−1, find the distance the ball travels up the slope until it comes to rest. (ii) Show that after coming to rest, the ball will start rolling back down the slope. (iii) Find the speed of the ball when it returns to its starting point 2)
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