A block is projected up a ramp with an initial speed $ v_0 $. It travels along the surface of the ramp with constant acceleration $ a $. Take the positive direction of motion to be up the ramp. If the acceleration vector points opposite the initial velocity vector, which of the following MUST be true?

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A block is projected up a ramp with an initial speed $ v_0 $. It travels along the surface of the ramp with constant acceleration $ a $. Take the positive direction of motion to be up the ramp. If the acceleration vector points opposite the initial velocity vector, which of the following MUST be true?(a) The acceleration is negative.
, (b) The velocity and acceleration have opposite signs throughout the block&#8217;s motion.
, (c) The block slows down until it reaches a constant (terminal) speed.
, (d) The block slows down until it comes permanently to rest at a maximum height on the ramp.
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Jason · Accepted Answer

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