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3. the figure below shows a skateboarder descending a ramp the...

# Question: the figure below shows a skateboarder descending a ramp the...

###### Question details

The figure below shows a skateboarder descending a ramp. The skateboarder starts from rest at the top of the ramp at A and leaves the ramp at B horizontally with a velocity v.

(a) State the energy changes that take place as the skateboarder moves from A to B.

(b) In going from A to B the skateboarder’s centre of gravity descends a vertical height of 1.5 m. Calculate the horizontal velocity, v, stating an assumption that you make.

(c) Explain why the acceleration decreases as the skateboarder moves from A to B.

(d) After leaving the ramp at B the skateboarder lands on the ground at C 0.42 s later. Calculate for the skateboarder

(i) the horizontal distance travelled between B and C,

(ii) the vertical component of the velocity immediately before impact at C,

(iii) the magnitude of the resultant velocity immediately before impact at C.