Determine the total mechanical energy for the 80kg skydiver in the previous two questions. (total me is the sum of ke and pe) (show the equation, show your work and answer with units.)

1= 26.17

2= 1.17

3=30.86

4=5.86

just took the assigment on edge

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards