Question

Check my answers please :)

A fighter jet landing on an aircraft carrier's flight deck that has a length of 300.0 m must reduce it's speed from about 42.5 m/s to 0 m/s in 2.0 s. What is the jet's acceleration?

I got 44.5 m/s2 (45 m/s2 when using sig figs). Is my answer true?

Answer 1

I actually did my work wrong and got an answer of -21.25 m/s2 (-21 m/s2 when using sig figs).

Answer 2

Is it still correct?

Answer 3

Initial speed(u)=42.5 m/s
Final speed(v)=0m/s
Time taken (t)=2 s

Acceleration=(v-u)/t
Acceleration=(0-42.5)/2

Answer 4

-21m/s^2 should be correct