Answer:
Explanation:
Work is given by the equation 
where 
is force and 
is displacement.
Displacement is defined as change in position. In this case, the box moves from 5m to 20m. Its displacement is 
.
The force acting on the box is the force of gravity, given as 
.
Therefore, the total work done is:
(two significant figures).
2(5) + 2 (z) = 10{3}
10 + 2z= 30
2z=20
z=10
Answer:
Force pull the child up. With the springs and the weight when you jump.
No, it's mass remains the same. It's attraction to the planets center AKA gravity changes.
Answer: If the force stays the same, the acceleration would decrease
