Braking 83146

A car of mass m=1t moves at a speed v0=54 km/h. What braking force must be exerted to bring the car to a stop in 10 seconds, and how far will the car travel in this time?

Correct answer:

F =  1500 N

Step-by-step explanation:

m=1 t kg=1 1000  kg=1000 kg v0=54 km/h m/s=54:3.6  m/s=15 m/s t=10 s  v0=a t  a=v0/t=15/10=23=1.5 m/s2  F=m a=1000 1.5=1500 N



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