Question

Rowdy Ron, a racecar driver with a mass of 70kg, survived a crash at 175km/h. He came at rest ib only 0.027 seconds

Answer 1

Although the question is missing, with the provided information you can find the impact (impulse), the change of momentum, the force and the acceleration.

Data:

mass, m = 70 kg

velocity, v = 175 km/h = 175 km * 1000 m/km * 1 h / 3600 s = 48.61 m/s

time, t = 0.027 s

Impact = F * t = m * a * t = m * Δv = change of momentum

=> Impact = change of momentum = 70 kg * 48.61 m/s = 3402.7 N*s

Force, F:

Impact = F * t => F = impact / t = 3402.7 N*s / 0.027 s = 126,025.9 N

Acceleration, a:

F = m * a => a = F / m = 126,025.9 N / 70 kg = 1800 m/s^2