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

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

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The magnets are probably damaged or there not strong enough to attached to the refrigerator