A skateboarder starting from rest rolls down a 125 m ramp, Ask an Expert

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A skateboarder, starting from rest, rolls down a 12.5 m ramp. When she arrives at the bottom of the ramp her speed is 6.10 m/s.

(a) Determine the magnitude of her acceleration, assumed to be constant. . m/s2

(b) If the ramp is inclined at 26.5° with respect to the ground, what is the component of her acceleration that is parallel to the ground? . m/s2

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