A car with a mass of 1.1 × 10^3 kilograms hits a stationary truck with a mass of 2.3 × 10^3 kilograms from the rear end. The initial velocity of the car is +22.0 meters/second. After the collision the velocity of the car is -11.0 meters/second. What is the velocity of the truck after this elastic collision?

Question

anonymous · Answer

Any help me with a formula? I can solve it after :) Just give me a little explanation.

amistre64 · Answer

i believe elastic collision is
m1vb + m2vb = m1va+m2va

amistre64 · Answer

a and b denoting velocities after and before the collision

souvik · Answer

in elastic collision total mechanical energy and linear momentum is conserved..

amistre64 · Answer

vb of m2 is 0

m1vb = m1va+m2va,  solving for va of m2

(m1vb - m1va)/m2 = va,  with any luck :)

anonymous · Answer

Thank you very Much :) FInally someone helps me out lol :)

amistre64 · Answer

youre welcome