⚠️⚠️A toy car with a mass of 0.65 kg is traveling at a speed of 2.0 m/s. It
collides head on with a 0.55 kg car traveling at a speed of 3.0 m/s in the
opposite direction. The 0.65 kg car bounces straight back with a speed of
1.5 m/s. Find the speed of the 0.55 kg car immediately following the
collision. *
1.1m/s, 2.4m/s, 3.5m/s, 7.1m/s

answer

1.1 m/s

explanation

momentum is conserved, so the total momentum of both cars is the same before and after the collision, where momentum is the product of mass and velocity

m1 = 0.65 kg

m2 = 0.55 kg

v1 = 2.0 m/s

v2 = -3.0 m/s (negative because moving in opposite direction)

v3 = -1.3 m/s (since it bounces back, this is in the opposite/negative direction)

power out to power in less than 100%

graph slopes whilst gas cools, then it is flat whilst conensation to liquid happens, the coolong liquid then graphs as a slope when it solidifies graph is flat

latent heat