Acart is moving to the right with a constant speed of 20 m s . a box of mass 80 kg moves with the cart without slipping. the coefficient of static friction between the box and cart is 0.30, and the coefficient of kinetic friction between the box and cart is 0.15. what are the magnitude and direction of the frictional force acting on the box as it moves with the cart?

The energy released by a nuclear fusion reaction is produced when

How much energy is supplied to each coulomb of charge that flows through a 12-v battery?

The particle p starts from rest at point a at time t = 0 and changes its speed thereafter at a constant rate of 2.8g as it follows the horizontal path shown. determine the magnitude and direction of its total acceleration (a) just before point b, (b) just after point b, and (c) as it passes point c. state your directions relative to the x-axis shown (ccw positive) and choose the angle with the smallest magnitude.