Me solve this: a bicyclist in the tour de france crests a mountain pass as he moves at 18 km/h. at the bottom, 4.0 km farther, his speed is 75 km/h. what was his average acceleration (in m/s square) while riding down the mountain?

The graph shown is a velocity-time graph of an object. what is the acceleration of the object from 6.0 to 10.0 seconds?

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.

Positive ions differ from neutral atoms in that