laurenw0816
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A sled is initially given a shove up a frictionless 37.0 ∘ incline. It reaches a maximum vertical height 1.20 m higher than where it started at the bottom.
What was its initial speed?
Express your answer to three significant figures and include the appropriate units.

Respuesta :

onyebuchinnaji

The initial speed of the sled at the given height is 4.85 m/s.

Initial speed of the sled

Apply the principle of conservation of energy;

K.E = P.E

¹/₂mv² = mgh

v² = 2gh

v = √2gh

where;

  • h is the vertical height reached
  • g is acceleration due to gravity

v = √(2 x 9.8 x 1.2)

v = 4.85 m/s

Thus, the initial speed of the sled at the given height is 4.85 m/s.

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