An object has 300J of potential energy. The object is dropped and begins to fall. How much potential energy will the object have when it has reached half of its original height?

Science and technology are interdependent. advances in one lead to advances in the other. give an example of this phenomenon.

Hydrogen and helium are both members of?

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.