Acertain race track is four and a half kilometers long. the winning driver in the race drove his car around the track twice in three minutes. what was his average speed over those two laps? answer in kilometers per hour.
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What is the radius of the circular path ofa charged particle in a magnetic field?

Ablock of mass 1.5 kg slides down an inclined plane that has an angle of 15. if the inclined plane has no friction and the block starts at a height of 3 m, how much kinetic energy does the block have when it reaches the bottom? acceleration due to gravity is g = 9.8 m/s2. a. 6.8 j b. 50.9 j c. 0 j d. 44.1 j

1. a net force of 100 newton’s is applied to a wagon for 5 seconds. this causes the wagon to undergo a change in momentum of