A 15 kg box is given an initial push so that it slides across the floor and comes to a stop. If the coefficient of friction is 0.30 a)find the friction force
b)find the acceleration of the box. Hint: what is the net force as the box slides to a stop?c)how far will the box go if its initial speed is 3.0 m/s?

The motor m applies a time-varying force of f (200 t) n, where t is in seconds. box b with mass 200 kg starts from rest, and the coefficients of kinetic and static friction are 0.2 and us 0.3 the acceleration due to gravity is g 9.8 m/s2 b 300 a) find the time ' when the box starts to move. b) calculate the speed of the crate at 3 s c) calculate the power delivered by the motor at t 3 s

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.

The process of a material going through a change of state from a gas to a liquid