Question

How long does it take for an airplane to change its velocity from 140 m/s to 180 m/s if its

acceleration is 4.0 m/s?? How far does it travel during this time? (10. s, 1600 m)
Proof please

Answer 1

Step-by-step explanation:

a = 4ms⁻², Vf = 180 m/s & Vi = 140m/s

a =
`(Vf-Vi)/(t)`

4 =
`(180-140)/(t)`

t = 40/4

t = 10sec

To Measure Distance Use third Equation of Motion:

2aS = Vf²-Vi²

S =
`(180*180 - 140*140)/(2(4))`

S = 12800/8 = 1600m