A roller coaster is about to go down 10 points a hill on its track. The roller coaster
has a mass of 6,000 kg and is initially
at rest. The coaster will descend 66
meters. At the bottom, how fast will
the roller coaster be going?

A. to determine if humans can explore mars safely

The particles of the gas inside the ball heats up, bouncing off each other and spreading farther apart.hope my answer has you : )

W= fd
where f is an applied force and d is the distance over which it is applied. when a parachuting skydiver is at constant velocity, he is experiencing "terminal velocity", the point at which his acceleration down is canceled out by air resistance. that means that the resisting force of the air is equal to his weight, but in the opposite direction. with this, we can solve for the work done by the force.
w = fd
w = (92.0)(9.81 m/s^2) (325)
w= 2.93 x 10^5 j
the value for work in this case is positive because it is pushing up on the skydiver, who has a downward force of gravity.
therefore the answer is 2.93 x 10^5 j

//(b) both involve the use of levers;