Ap Physics 1 Unit 5 Progress Check A |17 Questions| With Correct Answers.

A force is applied to a 2kg object, and measurements of the force as a function of time are shown. The force is the only force exerted on the object and is applied in the direction of the object's velocity. Which of the following could represent the initial velocity, v0, and the final velocity, vf, of the object? {Ans: v0=4 vf=6}Block X and block Y are tied together by a rope. The system containing block X and block Y is released from rest on a ramp, as shown in the figure. Block Y has a smaller mass than block X. Which of the following claims is correct regarding the momentum of the system containing only block X and the system that contains block X and block Y? {Ans: The system containing block XX is an open system, and the system of both blocks is an open system.}A toy car of mass 2kg travels along a horizontal surface with negligible friction at a speed of 1.0ms. The car then collides with a vertical wall. The wall applies a force of magnitude 20N for 0.2s on the toy car. Which of the following predicts the motion of the toy car