Asked by yvonne gray
A car that weifgs 15000 n is initially moving at 60 km/hr when the brakes are applied. The cae is broight to a stop in 30 m. Assuming the force applied by the brakes is constant, determine the magnitude of the braking force.
Answers
Answered by
Henry
Vo = 60km/hr = 60000m/3600s = 16.67 m/s.
V^2 = Vo^2 + 2a*d
a = (V^2-Vo^2)/2d
a = (0-(16.67)^2)/60 = -4.63 m/s^2.
Wt. of car = m*g = 15000 N.
mass = 15000/9.8 = 1531 kg
F = m*a = 1531 * -4.63 = -7.1 N.
V^2 = Vo^2 + 2a*d
a = (V^2-Vo^2)/2d
a = (0-(16.67)^2)/60 = -4.63 m/s^2.
Wt. of car = m*g = 15000 N.
mass = 15000/9.8 = 1531 kg
F = m*a = 1531 * -4.63 = -7.1 N.
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.