Which two actions are examples of people doing work in the scientific sense? A. kicking a ball so that it rolls across the gym floor
B. lifting a heavy book from the floor to a desktop
C. leaning on a wall while taking a break
D. holding a glass of water still so that it doesn't tip
E. pushing on a weight that is too heavy to move

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant

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.

Decreased sensitivity to an unchanging stimulus is known as