What is the final velocity of a car which was accelerating at a rate of .7kn/hr/sec if the initial......?

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What is the final velocity of a car which was accelerating at a rate of .7kn/hr/sec if the initial......?

What is the final velocity of a car which was accelerating at a rate of .7kn/hr/sec if the initial velocity was 30 km/hr and the time is 80 seconds?

2007-05-23 17:18:19 · 3 answers · asked by Shelby 2 in Science & Mathematics ➔ Physics

3 answers

use your constant acceleration equations, chug and plug, easy

2007-05-23 17:22:26 · answer #1 · answered by Anonymous · 0⤊ 0⤋

30 + 0.7*80 = 86 km/hr

2007-05-23 17:25:06 · answer #2 · answered by Helmut 7 · 0⤊ 0⤋

30km/hr=8.33 m/s

v(velocity)= a(acceleration)* t (time)+ v0 (initial velocity)
we have:
v0=8.33m/s
t=80(s)
a=0.7 km/square(hr)=0.194m/square(second)

Hence:
v=0.194*80 + 8.33= 23.88 m/second or 86Km/hr

2007-05-23 17:28:46 · answer #3 · answered by TBS 3 · 0⤊ 0⤋