Ap Physics 1 Unit 5 Progress Check A Study Guide Graded A+

A block of mass of 10kg travels in the positive direction along a surface with negligible friction. The block has an initial momentum 18kg⋅ms. The block collides with an object of an unknown mass that is at rest. The force exerted on the block as a function of time is shown on the graph. Which of the following best predicts the speed and direction of the block immediately after the collision? {Ans: speed decreases direction same}A block travels across a horizontal surface in which frictional forces are not considered to be negligible, as shown in the figure. Which of the following quantities should a student measure to verify that the direction of the frictional force exerted on the block from the surface is in the same direction as the change in momentum of the block? Select two answers. Justify your selections. {Ans: The initial velocity, because the initial momentum of the block is proportional to the final momentum of the block. The final velocity, because the initial momentum of the block is proportional to the final momentum of the block.}A student performs several experiments in which two carts collide as they travel along a horizontal surface. Cart X