It takes 50.0 j to push a large box 4.00 m across a floor. assuming the push is in the same direction as the move, what is the magnitude of the force on the box?

•• al and bert are jogging side-by-side on a trail in the woods at a speed of 0.75 m/s. suddenly al sees the end of the trail 35 m ahead and decides to speed up to reach it. he accelerates at a constant rate of 0.50 m/s2, while bert continues on at a constant speed. (a) how long does it take al to reach the end of the trail? (b) once he reaches the end of the trail, he immediately turns around and heads back along the trail with a constant speed of 0.85 m/s. how long does it take him to meet up with bert? (c) how far are they from the end of the trail when they meet?

In a system, when potential energy decreases, then entropy also decreases. true false

In a series circuit the __ is the same at every point