Knightro is learning a new trick called the Spring Launch, where he stands on a
ID: 1286302 • Letter: K
Question
Knightro is learning a new trick called the Spring Launch, where he stands on a skateboard and is launched up a ramp by a giant spring. In the first test run, the spring is compressed a distance ?x, Knightro moves across the horizontal portion of the ramp with speed v and reaches a maximum height H at the end of the ramp. For the next trial, Knightro plans to compress the spring a distance 2?x.
1. For the second trial, will the Knightros speed on the horizontal portion of the ramp be:
(circle one) greater than 2v less than 2v equal to 2v
Explain your reasoning.
2. Will the height reached by Knightro for the second trial be:
(circle one) greater than 2H less than 2H equal to 2H
Explain your reasoning
Explanation / Answer
less than 2v
0.5*k*(2x)^2 = 0.5*V'^2
V' = sqrt(2)v = 1.414 v
2) equal to 2H
H = v^2/2g
H' = V'^2/2g = 2H
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