Apineapple is 7 times as heavy as an orange. the pineapple also weight 870 grams more than orange what is the total weight in grams for the pineapple and orange

Let's call p= pineapple weight
and. g=orange weight

we have p=7*g
and. p=g+870

replacing the the second equation in the first we have
g+870=7*g

that means 870 = 7*g - g
870 = 6*g
g = 870/6 = 145

and p = 7*g = 1015

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