While leaning out a window that is 6.1 m above the ground, you drop a 0.60 kg basketball to a friend at ground level. Your friend catches the ball at a height of 1.1 m above the ground. Determine the following. (a) the amount of work done (in J) by the force of gravity on the ball :1 (b) the gravitational potential energy (in J) of the ballearth system, relative to the ground when it is released :1 (c) the gravitational potential energy (in J) of the ball-earth system, relative to the ground when it is caught : J (d) the ratio of the change (PEf FED) in the gravitational potential energy of the ball-earth system to the work done on the ball by the force of gravity W The center fielder for the school's baseball team throws a 0.150-kg baseball towards home plate at a speed of 24.0 m/s and an initial angle of 40.0. What is the kinetic energy of the baseball at the highest point of its trajectory? Supporting Materials Physical Constants Submit Answer 2 Points] DETAILS WEBASSIGNALGPHYS1 7.2.010. A man does 4,780 J of work in the process of pushing his 2.90 x 105 kg truck from rest to a speed of v, over a distance of 26.5 m. Neglecting friction between truck and road, determine the following. (a) the speed v (in m/s) |m/s (b) the horizontal force exerted on the truck (in N) N Physical Constants Supporting Materials Physical Constants 1 Points] DETAILS OSCOLPHYS1 7.P.019.WA. A cross-country skier slides horizontally along the snow and comes to rest after sliding a distance of 19 m. If the coefficient of kinetic friction between her skis and the snow is uk = 0.080, determine her speed at the start of the slide. m / s