Question

What is the net force on an 900-kg airplane flying with a constant velocity 180 km/hour north?

• A. zero
• B. 180 N
• C. 1800 N
• D. 9000 N
• E. None of the above is within $20\%$ of the correct answer

Answer 1

The correct option is A zero

Given that,

Mass of airplane, $m=900Kg$

Velocity, $v=180K/h$

Here, velocity is constant. So, acceleration is zero as

$a=\frac{dv}{dt}$

Force,

$F=ma$

$F=0$