A 65 kg speed skater is racing around a circular track. The track has a radius of 20 m. It takes the skater 10 seconds to complete one lap. The skater moves at a pace of 12.56 m/s. Calculate the skater's acceleration.

Write the equation for momentum, first using symbols for the variables, then using words for the variables.

Iwill give 30 points to whoever answers ! what is the formula for actual mechanical advantage and ideal mechanical advantage?

Apebble is thrown into a calm lake, ripples are formed from the center and move outward. the water particles in the lake travel in a circular pattern that moves up and down on the surface of a lake, and the energy travels a) diagonally. b) downward. c) horizontally. d) upward.