Question

An aircraft on its take-off run has a steady acceleration of 3m/s^2
a] what velocity does the aircraft gain in 4s
b]if the aircraft passes one post on the runaway at a velocity of 20m/s whats it velocity 8s later?

Answer 1

Answer:

3*4=12m/s answer for your first question

20+(3*8)=44 answer for second question

Explanation:

Acceleration of the aircraft = 3m/s²

.a) the velocity the aircraft gain in 4 seconds=

                3 x 4 (acceleration x time ) = 12 m/s

b) Velocity = 20 m/s

velocity 8 second=

            20+(8 x 3) = 44 m/s