A 1000kg train moving with a velocity of 10.0 m/s east collides with an 1175kg car at rest. The two stick together. What speed will they have after the collision?

What property is a characteristic of a substance that can be observed and does not change the identity of the substance

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.

What are some properties of transverse waves?