Answer to Question #326842 in Physics for Rachel

Question #326842

A car changes its velocity from 20 m/s [N] to 20 m/s[S] in 5.5 s. If the mass of the car is 1500 kg,

what is the net force acting on it?

Expert's answer

The Newton's second law says

"F=ma=\\frac{m\\Delta v}{\\Delta t}""F=\\frac{1500*(20-(-20))}{5.5}=10909\\:\\rm N"

The force is directed toward South.

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