Show your work for this problem: A heavy cardboard box is pushed along a tile floor at a constant velocity. The coefficient of friction .2 and the gravitational weight of the box is 98 N. What is the kinetic force of friction between the box and the tile floor?

F500 j of energy were added to 1 kg of each of these samples, which would experience the least temperature increase?

Ascientist is tracking an object orbiting the sun that is found between mars and jupiter. in order to classify the object as an asteroid, it must be at least

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