Describe the ratio of kinetic energy and potential energy the skateboarder will have at each of the following points in her ride
. Also, explain how the mechanical energy changes throughout the ride if there are no non-conservative forces acting on the system.
- at the top of the ramp
- a quarter of the way down the ramp
- halfway down the ramp
- three-quarters of the way down the ramp
- at the bottom of the ramp
Be sure to support your response with evidence from the text.
- at the top of the ramp
- a quarter of the way down the ramp
- halfway down the ramp
- three-quarters of the way down the ramp
- at the bottom of the ramp
Be sure to support your response with evidence from the text.
1 answer:
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Answer:1.71 m/s
Explanation:
Given
mass of Susan
Inclination
Tension
coefficient of Friction
Resolving Forces Along x axis
where
since there is no movement in Y direction therefore
and
Thus
Work done by applied Force is equal to change to kinetic Energy
Answer:
(A) Velocity will be 1.88 m/sec
(b) Force will be 187.45 N
Explanation:
We have given work done = 4780 j
Distance d = 25.5 m
(A) Mass of the truck m =
We know that kinetic energy is given by
So
(B) We know that work done is given by
W = Fd
So