Kara Less was applying her makeup when she drove into Kroger's busy parking lot last Friday morning. Unaware that Lisa Ford was stopped in her lane 30 feet ahead, Kara rear-ended Lisa's rented Taurus. Kara's 1300-kg car was moving at 11 m/s and stopped in 0.14 seconds. If this was a perfectly elastic collision, what is the momentum of Lisa Ford's car after the collision?
To solve this problem, we need to use the principle of conservation of momentum.
The momentum before the collision (p_initial) is equal to the momentum after the collision (p_final) since it is a perfectly elastic collision.
The momentum of an object is calculated by multiplying its mass (m) by its velocity (v).
Let's calculate the momentum of Kara's car before the collision:
p_initial = m1 * v1
p_initial = 1300 kg * 11 m/s
p_initial = 14,300 kg·m/s
Since the collision is perfectly elastic, the momentum after the collision is the same as the momentum before the collision.
Therefore, the momentum of Lisa Ford's car after the collision is also 14,300 kg·m/s.