A jet plane is cruising at 300 m/s when suddenly the pilot turns the engines up to full throttle. After traveling 4.0 km, the jet is moving with a speed of 400 m/s.

What is the jet's acceleration, assuming it to be a constant acceleration?

I got:

a =

8.8

m/s2

Is your answer reasonable? Explain.

Question

Tania Rogers

Physics

2 May, 20:23

A jet plane is cruising at 300 m/s when suddenly the pilot turns the engines up to full throttle. After traveling 4.0 km, the jet is moving with a speed of 400 m/s.

What is the jet's acceleration, assuming it to be a constant acceleration?

I got:

a =

8.8

m/s2

Is your answer reasonable? Explain.

+3

Answers (1)

Know the Answer?

Jason Medina · Answer 1

The answer got is reasonable.

Explanation:

We have equation of motion v² = u² + 2as

Initial velocity, u = 300 m/s

Acceleration, a = ?

Final velocity, v = 400 m/s

Displacement, s = 4 km = 4000 m

Substituting

v² = u² + 2as

400² = 300² + 2 x a x 4000

a = 8.75 m/s² = 8.8 m/s²

The acceleration is 8.8 m/s²

The answer got is reasonable.

A jet plane is cruising at 300 m/s when suddenly the pilot turns the engines up to full throttle. After traveling 4.0 km, the jet is moving with a speed of 400 m/s.What is the jet's acceleration, assuming it to be a constant acceleration?I got:a =8.8m/s2Is your answer reasonable? Explain.