Answer on Mechanics | Relativity Question for rissel manalo
a. The time the car has stopped.
b. The average force acting on the driver.
c. The deceleration of the drive.
0 = 18 m/s - at
s=s0 +v0t - at2/2
0.55 = 18 t - at2/2
We have to solve this system of equations:
at = 18; a = 18/t
0.55 = 18t - 18t/2 = 9tt = 0.55/9 = 0.06 s.
a = 18/0.06 = 300 m/s2
F = ma = 60*300 = 18,000 Na. 0.06s b. 18,000 N c. 300 m/s2
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