A race car has a mass of 710 kg. It starts from rest and travels 40.0 mters in 3.0 seconds . The car is...?

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The car is uniformly accelerated during the entire time. What net force is exerted on it?

Please help.

2006-10-17 10:47:48 · 3 answers · asked by swimmertommy 1 in Science & Mathematics ➔ Physics

I'm not sure about the force exerted on it, but I can tell you that's one slow race car!

2006-10-17 10:56:38 · answer #1 · answered by morlock825 4 · 0⤊ 0⤋

Use the equation:
s = ut + 1/2at^2
40m = 0 + 1/2a*9
40*2/9 = a
a = 8.9m/s^2
F = ma
F = 710kg*8.9m/s^2
F = 6319N

2006-10-17 18:40:00 · answer #2 · answered by quark_sa 2 · 0⤊ 0⤋

d=.5at^2
40=.5(a)(9)
a=80/9 m/s/s

f=ma=(710)(80/9)=6311.11N

2006-10-17 17:57:22 · answer #3 · answered by Greg G 5 · 0⤊ 0⤋