Asked by BB
A Car moving North at 9 m/s strikes a stationary car of equal mass. The first car moves off after the collision at an angle of 30 degrees West of North, with a speed of 6 m/s.
What is the speed of the second car after the collision?
My resources have poor explanation of what to do. From what I gathered, I'm supposed to use:
V1^2 = V1'^2 + V2'^2 - 2V1'V2'CosTheta
9^2 = 6^2 + V2'^2 - 2(6)(V2') Cos30
81 = 36 + V2'^2 - 10.39(V2')
0 = V2'^2 - 10.39 (V2') - 45
Am i Supposed to go into Pythagorean's theory? Frankly I'm just lost.
What is the speed of the second car after the collision?
My resources have poor explanation of what to do. From what I gathered, I'm supposed to use:
V1^2 = V1'^2 + V2'^2 - 2V1'V2'CosTheta
9^2 = 6^2 + V2'^2 - 2(6)(V2') Cos30
81 = 36 + V2'^2 - 10.39(V2')
0 = V2'^2 - 10.39 (V2') - 45
Am i Supposed to go into Pythagorean's theory? Frankly I'm just lost.