Two cars, both of mass m, collide and stick together. Prior to the collision, one car had been traveling north at speed 2v, while the second was traveling at speed v at an angle south of east (as indicated in the figure). After the collision, the two-car system travels at speed ufinal at an angle east of north. (Figure 1) Figure 2v < 1 of 1 > Vfinal ▼ Part A If the speed u was 5.1 m/s and the angle was 21.5 degrees, find the speed Ufinal of the joined cars after the collision. ►View Available Hint(s) 15. ΑΣΦΑ Ufinal= Submit Part B 0= What is the angle with respect to north made by the velocity vector of the two cars after the collision? ▸ View Available Hint(s) Submit 17 ΑΣΦ 5 BATE ? ? m/s degrees

Treat the collision as elastic.  A moving billiard ball hits an identical (except for color) stationary ball.   After the collision, the orange ball always goes off in the positive x-direction.  The final speeds are v and V.  Calculate the angle θ that the green ball goes off in.  (θ should be positive.) V0 = the initial green body's speed = 6 m/s M = the mass of both balls = 6 kg φ = the incoming green ball's angle = 70o It's always a good idea to check your answer with the momentum-conservation and energy-conservation equations.

Two bricks, each of mass M, head directly toward each other on a frictionless surface and collide, as shown. Brick A has twice the speed as brick B. Which one of the following statements is true regarding the forces the objects exert on each other during the collision? 2v – A В The magnitude of the force that A exerts on B is four times smaller than the magnitude of the force that B exerts on A. The magnitude of the force that A exerts on B is two times smaller than the magnitude of the force that B exerts on A. The magnitude of the force that A exerts on B is equal to the magnitude of the force that B exerts on A. O The magnitude of the force that A exerts on B is twice as large as the magnitude of the force that B exerts on A. The magnitude of the force that A exerts on B is four times as large as the magnitude of the force that B exerts on A.

A curling stone travelling at 5.0 m/s collides with a stationary stone of the same mass. Following the collision, the two stones travel at angles of 17° and 38° in opposite directions with respect to the initial motion of the first stone. (5.5) K/U T/I C (a) Draw a diagram of the stones’ motion. (b) Calculate the speed of each stone after the collision.

Cons Block 1, of mass m1 = 2.90 kg , moves along a frictionless air track with speed vị with block 2, of mass m2 = 57.0 kg , which was initially at rest. The blocks stick together after the collision. (Figure 1) 13.0 m/s. It collides %3D Part A Part B Part C What the change AK = Kfinal – Kiniti. in the two-block system's kinetic energy due the collision? Express your answer numerically in joules. • View Available Hint(s) Figure 1 of 1 HV ΑΣφ ? Before collision: m2 m1 AK = 1 Submit After collision: Provide Feedback 1 2.

Solve number 2

A cart that rolls with low friction on a track is originally at rest. It is given a brief push, and it coasts a long distance along a track in the +x direction, slowly coming to a stop. Study graphs (A) - (C) below, which do not have the vertical axes labeled. One is a position (x) versus time graph, one is a momentum (px) versus time graph, and one is a net force (Fnet,x) versus time graph. Label the vertical (y-) axis of each of the graphs, and explain how you made your determination. (A) (B) (C) t

A 10 kg ball of putty moving to the right has a head-on inelastic collision with a 1 kg putty ball moving to the left. If the combined blob doesn't move just after the collision, what can you conclude about the relative speeds of the balls before they collided?Speed of 10 kg ball = _  ✕ speed of 1 kg ball.

A 0.2-kg rubber egg bounces off an actor's roof, remaining in contact with it for 43 ms while changing the egg's velocity from 24.5 m/s directly toward the roof to 13.5 m/s directly away from it. Find the magnitude of the average force applied to the egg by the roof. (Be careful with units!) Fav= = N Record your numerical answer below, assuming three significant figures. Remember to include a "-" when necessary.

suppose that car 1 has a mass of 0.301+-0.0001kg, and initial speed of 2.12+-0.03 m/s in the positive x direction. car 2 of mass 0.305+-0.0001kg is initially stationary. the two cars collide. after the collision, car 1 comes to a stop, and car 2 has a speed of 1.97+-0.02 m/s in the positive x direction. calculate the total final kinetic energy of the two car system with uncertainty.