Question

3) Figure 3 schematically illustrates a collision between a pair of 1st and 2nd cars having respective masses Mi and M2. The collision occurred on a horizontal plane, the cars did not stick together after the collision, and there was substantial body damage to both cars. The 1st car was initially traveling east with speed Vio. The 2nd car was initially travelling north with speed V2o. The cars collided with each other at an icy intersection and an initial investigation determined that there was no external impulse acting on the system of 2 Immediately after the collision, the 2nd car ended up traveling east with a final speed V2f and the 1st car ended up traveling with final speed Vif at an angle 0 north of east. The 2nd car had a satellite-based tracking system that recorded the values of the speeds V20 and V2f. The 1st car had no such system. An investigation of the scene determined the value of θ. During a courtroom hearing, there is and a disagreement over the values of the speeds Vio and Vif. You are hired by one of the litigants to testify as an expert witness who can apply the laws of physics and determine reasonably accurate values of the disputed speeds of the 1st car. Your testimony includes the solutions to the following problems 1f Figure 3 North East 10 V. 2f 20 cars during the collision Determine expressions {Mi, M2, 0, V2o, V2s* for: a) the initial speed, Vio, of the 1st car; and b) the final speed, Vif, of the 1st car. 4) A more detailed investigation of the accident scene of problem #3 determined that there was actually an external impulse acting on the system of 2 cars during the collision. This impulse is given by ext -(A(east) + B(north)) where A and B are positive values. Determine expressions A, B, M, M2, θ, V20, Vad for: a) the initial speed, Vio, of the 1t car, and b) the final speed, Vis, of the 1st car.

Answer 1

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