the speed of a boat increases from 62 km/h to 80 km/h in 0.9km. What was the acceleration and how long did it take

Answer 1

ok we need to do a little bit of physics here...

so first we need to find acceleration...how you say?...well, by using this beautiful equation!!

a = (vf^2 - vi^2)/(2d)

plug away numbers in their respectful places and you will get...

a = ((80)^2 - (62)^2)/(2(0.9))
a = 1420 km/hr^2

now to find the time it took use this wonderful equation...

t = (vf - vi)/(a)

plug and chug like usual...

t = (80 - 62)/(1420)
t = 0.012676 hr
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and always remember....HERP THE DERP!!!