You pushdown on a 3.0N box for 10 mins. How much work was done?

The experiment done in lab is repeated, using a ball that has unknown mass m. you plot your data in the form of f 2 versus m/l, with f in rev/s, m in kg, and l in m. your data falls close to a straight line that has slope 3.19 m/(kg · s2). use g = 9.80 m/s2 and calculate the mass m of the ball.

The force needed to overcome static friction is usually less than that needed to overcome kinetic friction.true or false?

Abowling ball rolling down the lane toward the pins has gravitational potential energy. a. no b. a lot of c. a little