An airplane requires 420m of runway to take off from an airstrip. if the plane starts from rest and it takes 32s to lift off, with what velocity does it leave the ground? what was the average acceleration of the plane? help please

Question

anonymous · Answer

You will simply be using a kinematics equation here: $$V =\Delta X \div \Delta t$$because velocity is the relationship of distance over time. Simply plug and chug to get velocity.

Once you find velocity, simply use another kinematics equation: $$V _{f} = V _{o} + at$$Do a little algebra to get "a" on one side and you should have: $$a = \Delta V \div  \Delta t$$This is because you are dividing "m/s" by "s" which is m/s^2 and therefore acceleration. Plug and chug to get acceleration.

Hope this helped.

khally92 · Answer

Hi i got 13.13 for velocity and 0.41 for average acceleration.

anonymous · Answer

Yes that is exactly what I got. Nice job.

khally92 · Answer

thanks alot...