Question

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.

Answer 1

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.

Learn more about initial speed here: brainly.com/question/24493758

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