He graph below shows the velocity f(t) of a runner during a certain time interval:
graph of line going through ordered pairs 0, 4 and 4, 8. graph of another line going through ordered pairs 4, 8 and 8, 0. label on the x axis is time in second and label on the y axis is velocity in meter per second
which of the following describes the intercepts on the graph?
the initial velocity of the runner was 4 m/s, and the runner stopped after 8 seconds.
the initial velocity of the runner was 8 m/s, and the runner stopped after 4 seconds.
the initial acceleration of the runner was 4 m/s2,

What happens in a global convection cell

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 changes would result in a decrease in the gravitational force btween two objects? check all that apply