Final answer:
To answer the student's question: (a) The momentum change of Kara's car is 14300 kg*m/s. (b) The impulse experienced by the car is also 14300 kg*m/s. (c) The magnitude of the force experienced by the car is 102142.86 N.
Step-by-step explanation:
The question you've asked pertains to the principles of momentum and impulse in a car collision. Here's how you can determine momentum change, impulse, and force experienced by Kara's car in the collision:
(a) Momentum change (Δp) of Kara's car can be calculated using the formula Δp = m * Δv, where m is the mass of the car and Δv is the change in velocity. Since the car comes to a stop, Δv is just the initial velocity (11 m/s).
(b) Impulse (J) experienced by the car is equal to the change in momentum, so J = Δp.
(c) Magnitude of the force (F) experienced by Kara's car is found using the impulse-momentum theorem, J = F * Δt, where Δt is the time over which the force acts.
For the calculation: Kara's car with a mass of 1300 kg, initial velocity of 11 m/s, and a stopping time of 0.14 s.
(a) Δp = m * Δv = 1300 kg * 11 m/s = 14300 kg*m/s
(b) J = Δp = 14300 kg*m/s
(c) F = J / Δt = 14300 kg*m/s / 0.14 s = 102142.86 N (assuming acceleration is constant)