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A car moving at 20 m/s crashes into a bridge abutment. Calculate the magnitude of the average force on a 60 kg driver if the car stopped over a period of 2 seconds by crashing into a row of water filled barrels.

Respuesta :

samuelonum1

Answer:

600N

Explanation:

Step one:

given data

velocity = 20m/s

mass m= 60kg

time t= 2 seconds

The impulse is the force acting instantly

the expression for impulse is

Ft=mv

F=mv/t

substituting we have

F=60*20/2

F=1200/2

F=600N

Therefore the average force is 600N

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