A moving truck crashes into a stationary car. The truck's mass is ten times that of the car. How does the magnitude of the force exerted by the truck on the car compare with that exerted by the c

Question

A moving truck crashes into a stationary car. The truck's mass is ten times that of the car. How does the magnitude of the force exerted by the truck on the car compare with that exerted by the car on the truck?

TestHub · Accepted Answer

Newton's third law: the force of the truck on the car and the force of the car on the truck are equal in magnitude and opposite, whatever the masses and speeds.

$F_{1} t = Δ p_{c a r}$ , $F_{2} t = Δ p_{t r u c k}$ with $Δ p_{c a r} = Δ p_{t r u c k}$ , so $F_{1} = F_{2}$ .

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