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galina1969 [7]
2 years ago
9

A skier stands at the top of a 50 meter slope. He then skis down the slope. What is his approximate speed at the bottom of the s

lope?
Physics
1 answer:
dedylja [7]2 years ago
7 0

Answer:

31 m/s

Explanation:

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A car is driving at 85 km/h and the driver spots a stop sign ahead. What coefficient of friction is needed to stop the car at th
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Answer:

μ = 0.0315

Explanation:

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Using the theorem of work and energy, which tells us that the sum of the potential and kinetic energies and the work done on a body is equal to the final kinetic energy of the body. We can determine an equation that relates the frictional force to the initial speed of the carriage, so we will determine the coefficient of friction.

\frac{1}{2} *m*v_{i}^{2}-(F*d)=  \frac{1}{2} *m*v_{f}^{2}

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