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Suppose you run into a wall at 4.5 meters per second (about 10 mph). Let's say the wall brings you to a complete stop in 0.5 second. Find your deceleration and estimate the force (in newtons) that the wall exerted on you during the stopping?

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lublana

Answer with Explanation:

We are given that

Initial velocity,u=4.5 m/s

Time=t =0.5 s

Final velocity=v=0m/s

We have to find the deceleration and estimate the force exerted by wall on you.

We know that

Acceleration=[tex]\frac{v-u}{t}[/tex]

Using the formula

Acceleration=[tex]a=\frac{0-4.5}{0.5}[/tex]

deceleration=a=[tex]-9m/s^2[/tex]

We know that

Force =ma

Using the formula and suppose mass  of my body=m=40 kg

The force exerted by wall on you

Force=[tex]40\times (9)=360N[/tex]

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