Acart is pulled by a force of 250 n at an angle of 35° above the horizontal. the cart accelerates at 1.4 m/s2. the free-body diagram shows the forces acting on the cart.  the mass of the cart, to the nearest whole number, is   kg

Two cannon balls weighing 18 kg and 24 kg are chained together and fired horizontally with a velocity of 165 m/s from the top of a 21-m wall. the chain breaks during the flight of the cannonballs and the 18-kg cannonball strikes the ground at t = 1.5 s, at a distance of 240 m from the foot of the wall, and 7 m to the right of the line of fire. determine the position of the other cannonball at that instant. neglect the resistance of the air.