The net force on a golf cart is 390 N north. If the cart has a total mass of 270 kg, what is the magnitude and direction of the cart's acceleration? *

If the speed of a particle triples ,by what factor does its kinetic energy increase?

Thomas his older brothers, who own a junk yard, on the weekends to earn extra money. he likes to them push broken-down cars to the back of the junk yard because it makes him feel strong. last saturday, they pushed three cars with different weights, and he noticed he used different amounts of force for each one. the cars were the following weights: white car: 2,700 kg red car: 1,500 kg blue car: 2,100 kg think about how much force is needed to move each car. which correctly lists the cars in order from the most to least amount of force needed to move them? a) white, blue, red b) blue, red, white c) red, white, blue d) white, red, blue

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?