60 g is not a small force.
a. F=ma
Force=4.5*60*9.8 N
= 2646 N
b. Force*time=19
time= 19/2646
=0.00718 s
One study suggests that a brain concussion can occur if a person's head is subjected to an acceleration as small as 60g, where g is the acceleration of gravity.
a. If the mass of the person's head is 4.5 kg, what is the magnitude of the force?
(Express your answer to two significant figures and include appropriate units.)
b. If the impulse delivered to the person's head is 19 kg⋅m/s, over what time interval is the force applied?
(Express your answer to two significant figures and include appropriate units.)
1 answer