02-05-2019
Physics

contestada

starting from rest a 5.00 kg steel sphere rolls down a frictionless ramp with a height of 4.00 m. what is the spberes speed when it reaches the bottom of the ramp
________m/s

A. 8.85

B. 78.4

C. 39.2

D. There is no energy lost from the system

Respuesta :

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02-05-2019

Answer:

A. 8.85

Explanation:

U = mgh

5*4*9.8 = 0.5*5*V^2

V = √4*9.8/0.5 = √78.4 = 8.85 m/se

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