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A 2200 kg SUV traveling at 23.9 m/s can be stopped in 0.16 s if it hits a concrete wall. Assume that a 60 kg person was in the car when it hir the wall. What is the average force exerted on the person

Answer :

opudodennis

Answer:

8962.5 N

Explanation:

From fundamental kinematics equations, acceleration, a is given by [tex]a=\frac {v-u}{t}[/tex] where v is final velocity, u is initial velocity and t is time

We also know that force is a product of mass and acceleration of an object and substituting [tex]a=\frac {v-u}{t}[/tex]  in the formula F=ma we obtain

[tex]F=ma=m\frac {v-u}{t}[/tex]  where m is the mass of the body

[tex]F=60\times\frac {0-23.9}{0.16}=-8962.5 N[/tex]

Therefore, the force is 8962.5 N

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