Questions on How the Presence of an Airbag Actually Protects You A 65.0-kg man is traveling...

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Questions on How the Presence of an Airbag Actually Protects You

A 65.0-kg man is traveling at 15.0 m/s when he experiences a head-on collision.

(a) Calculate the force (in Newtons; 1 N = 1 kg•m/s2) exerted on him when he is restrained by an airbag that increases Δt to 1.5 s.

(b) What does the sign of the force calculated in part (a) imply about the change in velocity of the body?

Answer 1

Answer #1

A) force = m dv/dt

= 65*(-15/1.5)

= -650 N

magnitude of force = 650 N

B) sign is negative.

Answer 2

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