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.
Solution by an expert tutor
