Cedric not carrying that his mother will yell at him for wearing out his 15.0 kg gym bag drags it across the gym floor for a distance of 30 m. If the coefficient of static friction is 0.314 and the kinetic friction is 0.11, how much thermal energy does he create?

The astronauts on the space shuttle flights experienced an acceleration of 29 m/s2 (about 3 "g's") during lift-off. what upward force must the astronaut's seat apply to the astronaut in order to cause this acceleration? assume the astronaut's mass is 70 kg, and compute this force when the acceleration is near the earth's surface so their weight equals latex: mg m g .

Estimate of the number of stars in our galaxy

A2.50 × 105 w motor is used for 26.4 s to pull a boat straight toward shore. how far does the boat move toward shore if a force of 4.20 × 104 n is applied by the motor?