Block ' ~ . Rump A student strikes a block at the bottom of a ramp, giving it an initial speed vo up the ramp, as shown above. There is friction between the ramp and the block as it slides a distance x up the ramp and then slides back down. (a) On the dots below, which represent the block as it is sliding up the ramp and down the ramp, draw and label the forces (not components) exerted on the block. Represent each force by a distinct arrow starting on, and pointing away from, the dot. The dashed lines are drawn at the same angle as the surface ofthe ramp. Up the Ramp Down the Ramp (b) The block takes time tap to slide up the ramp a distance x. The block then takes time tdown to slide back down to the bottom ofthe ramp, where it has speed Vf. Is tdown greater than, equal to, or less than tup ? tdown greater than tup tdown equal to tap tdown less than tap c) In a clear, coherent paragraphlength response that may also contain figures and/or equations, explain your reasoning. If you need to draw anything other than what you have shown in part (a) to assist in your response, use the space below. Do NOT add anything to the figures in part (a)