Answered

1. A plane has a take-off speed of 90 m/s. What is its acceleration if it started
from rest and took 45 seconds to take off?
2. A car slows down from a speed of 25 m/s and comes to stop in 30 seconds.
What is the acceleration of the car?
with solution po please thanks:)​

Sagot :

Mathlizard27viz

Answer:

1. a= 2 m/s²

2. a= 0.833 m/s²

Explanation:

1. vf= 90 m/ s

vi= 0 m/s

t= 45 s

vf= vi+ at

90=0+ a(45)

a= 2 m/s² Answer

2. vf= 0 m/ s

vi= 25 m/s

t= 30s

vf= vo+ at

0=25 + a(45)

-25=a45

a= -2 m/s² Answer, The deacclaration before the car stop.

That's it. Pa appreciate naman.