A1-kg car and a 2-kg car are both released from the top of the same hill and roll down a frictionless track. at the bottom of the hill, which car will have the greater speed? which car will have the greater kinetic energy?

To travel at constant speed, a car engine provides 24kw of useful power. the driving force on the car is 600n. at what speed does it travel?

Arunner is training for an upcoming marathon by running around a 100-m-diameter circular track at constant speed. let a coordinate system have its origin at the center of the circle with the x-axis pointing east and the y-axis north. the runner starts at (x, y) = (50 m, 0 m) and runs 2.5 times around the track in a clockwise direction.

What part of the ear is names after tools, such as the hammer and the anvil?