Astudent is skateboarding down a ramp that is 7.76 m long and inclined at 26.3° with respect to the horizontal. the initial speed of the skateboarder at the top of the ramp is 3.07 m/s. neglect friction and find the speed at the bottom of the ramp.

Final velocity will be 6.566 m/sec

Explanation:

We have given distance s = 7.76 m

Initial speed u = 3.07 m/sec

Let m be the mass of the scallerer

Force acing down the ramp is the sinθ component of the force due to gravity and this = mg

Acceleration down the ramp =

Speed at the bottom of the ramp can be found out using,

According to third equation of motion

So

v = 6.566 m/sec

another example of kinetic energy would be,

kinetic energy   >     moving energy

answer   >   letter choice (c),   a hammer falling off a table.

hope that !                                         : )

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

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