A skateboarder starting from rest rolls down a 150 m ramp, Ask an Expert

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A skateboarder, starting from rest, rolls down a 15.0 m ramp. When she arrives at the bottom of the ramp her speed is 8.05 m/s.

a) Determine the magnitude of her acceleration, assumed to be constant.

b) If the ramp is inclined at 28.5° with respect to the ground, what is the component of her acceleration that is parallel to the ground?

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