A student has 5 small carts, each with a different mass. Placing each of them on a flat, smooth ramp she uses a spring driven plunger to push each cart with a constant force. She measures the amount of time it takes each cart to reach the end of the ramp. She adjusts the amount of force used each time until each of the carts reach the end of the ramp with the same time. This means that each cart will have approximately the same initial acceleration. Which of the graphs below could represent the amount of force needed to push the different carts so they get the same acceleration?

This problem has been solved! see the answera non-uniform fire escape ladder is 6.0m long whenextended to the icy alley below. it is held at the top by africtionless pivot, and there is neglibible frictional force fromthe icy surface at the bottom. the ladder weighs 250n, and it'scenter of gravity is 2.0m along the ladder from the bottom. amother and child of total weight 750n are on the ladder 1.5m fromthe pivot. the ladder makes an angle θ with the horizontal.find the magnitude and direction ofa) the force exerted by the icy alley on the ladderb) the force exerted by the ladder on the pivotc) do your answers in part a and b depend on the angle?

Complete the sentence to describe the law of conservation of energy. the law of conservation of energy states that energy cannot be created or , but it can be

Each neuron shown in this figure innervates a group of muscle fibers. what is the term for a group of muscle fibers innervated by a single neuron?