An inclined plane is used to move a heavy box from the ground into the bed of a truck. 4 in
1 m
If 100 N of force is required to move the load up the ramp, how much work is done?
Your
0100)
O 300 )
+
0400)
O 500)

Explain the comparisons between nature and packingtown that appears on pages 81 and 82 answer

Aperson gives a shopping cart an initial push along a horizontal floor to get it moving, and then lets go. the cart travels forward along the floor, gradually slowing as it moves. consider the horizontal force(s) on the cart while it is moving forward and slowing. which of the following statements is correct? (a) both a forward and a backward force are acting on the cart, but the forward force is larger. (b) only a forward force is acting which diminishes with time. (c) both a forward and a backward force are acting on the cart, but the backward force is larger. (d) only a backward force is acting, no forward force.

Which of the following is the main energy source for the sun? a. fission of hydrogen b. fusion of hydrogen c. fusion of helium d. fission of iron