a net force of 3,00 N accelerates a car from rest tp 36.0 km/h in 5.0 s
what is the mass of the car?
what is the weight of the car?
2007-03-17 10:04:49 · 2 answers · asked by Ashlee 3 in Science & Mathematics ➔ Physics
First, make everything standard...
36 km/h = 10 m/s
Next, find the acceleration
a = (v2 - v1)/(t2 - t1) = (10 - 0) / (5 - 0) = 2 m/s²
F = ma
3000 = m * 2
divide and get
m = 3000/2 = 1500 kg.
Weight is
W = m*g
W = 1500 * 9.8 which is about 15000 N (you can do it yourself)
2007-03-17 10:11:41 · answer #1 · answered by Boozer 4 · 0⤊ 0⤋
well force is mass times acceleration, acceleration is change in speed divided by change in time, and weight is mass times the acceleration of gravity, the only issue you need to worry about first is changing your speed of 36 km/h to m/s
2007-03-17 17:10:17 · answer #2 · answered by James L 2 · 0⤊ 0⤋