Two automobiles traveling at right angles to each other collide and stick togeth
ID: 1287006 • Letter: T
Question
Two automobiles traveling at right angles to each other collide and stick together. Car a has a mass of 1400kg and speed of 30m/s before the collision. Car b has a mass of 1900kg. The skid mark shows that immediately after the collision, the wreckage was moving in a direction making an angle of 30 degrees with the original direction of car a. What was the speed of car b before the collision, assuming that any other unbalanced forces are negligible? Two automobiles traveling at right angles to each other collide and stick together. Car a has a mass of 1400kg and speed of 30m/s before the collision. Car b has a mass of 1900kg. The skid mark shows that immediately after the collision, the wreckage was moving in a direction making an angle of 30 degrees with the original direction of car a. What was the speed of car b before the collision, assuming that any other unbalanced forces are negligible?Explanation / Answer
speed of car A
(1400+1900)*v*cos30 = 1400*30
v = 14.69 m /s
speed of car B
3300*14.69*sin30 = 1900*Vb
Vb = 12.76 m/s