Calculate the mechanical energy of the skater at this point. Use g = 9.8 m/s2 for the acceleration due to gravity.

A 64.1 kg ice skater pushes off his partner and accelerates backwards at 1 m/s2. If the partner accelerates in the opposite direction at 1.6 m/s2 what is the mass of the other skater?Assume that frictional forces are negligible. Express your answer in kg. Your result must contain at least one digit after the decimal point.

During the skateboard finals, Jonas encounters a 6 m long, 15◦ upward ramp. Jonas’s mass, including the skateboard, is 65 kg, and the coefficient of rolling friction between her wheels and the ramp is 0.025(b) Find the net mechanical energy at the top of the ramp. (c) With what speed must he start up the ramp to reach the top at 2.5 m s−1? (d) What percentage of his mechanical energy is lost to friction? (e) Jonas now runs forward with his skater at 2.0 m s−1 to the top of an arched skating ramp with a radius of curvature 5 m. The ramp is a very slippery slope. What is his (i) maximum normal force, and (ii) speed at the bottom of the ramp?Solve it and calculate the equation

What force is required to keep a 75 kg man skating at 3.0 m/s if the coefficient of kineticfriction for ice on steel is 0.050?

A skater increases her speed uniformly from 2.0 meters per second to 7.0 meters per second over a distance of 12 meters. What is the magnitude of her acceleration?A 1.9 m/s2B 2.2 m/s2C 2.4 m/s2D 3.8 m/s2

A 50 kg skater pushed by a friend accelerates 5 m/sec2.  How much force did the friend apply?