Challenge: a 3 kg model airplane is traveling at a speed of 33 m/s.. the operator then increases the speed up to 45 m/s in 2 seconds. how much force did the engine need in order to make this change?

The average force exerted on an object is given by the equation:

F = Δp/Δt = mΔv/Δt = m(Vf-Vi)/Δt

F is the average force, m is the object's mass, Vi is the object's initial velocity, Vf is the object's final velocity, and Δt is the time elapsed.

Given values:

m = 3kg

Vi = 33m/s

Vf = 45m/s

Δt = 2s

Plug in the values and solve for F:

F = 3(45-33)/2

F = 18N

falling water hydro = water .. spectcular places these plants are

hello, i am papaguy.

i have found an answer to your question but use it as information.

information: because weak acids/bases have low concentration of hydrogen ions, the addition of water has a large impact on the ph. 2. a difference in 1 unit is a 10x difference in concentration for example; a liquid with ph of 3 is 10x more acidic than a liquid with a ph of 4. therefore, a liquid with a ph of 3 is stronger.

best of luck!