Automotive standards call for bumpers that sustain essentially no damage in a 4-km/h collision with a stationary object. as an automotive engineer, you'd like to improve on that. you've developed a spring-mounted bumper with effective spring constant 1.5 mn/m . the springs can compress up to 6.0 cm before damage occurs

Ireally don’t know

Not what goes around on earth but the universe too.

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