a plane is flying at a speed of 70 kilometers per hour. then a tailwind (moving in the same direction as the plane) of 5 kilometers per hour acts on the plane. how is the plane's net force calculated?

divide the larger force by the smaller force
multiply the two forces
subtract the smaller force from the greater one
add the two forces together

The net force on the plane is calculated by adding the two forces together. In this case, the larger force is the speed of the plane (70 kilometers per hour) and the smaller force is the speed of the tailwind (5 kilometers per hour). Therefore, to calculate the net force, you would add the two speeds together:

70 kilometers per hour + 5 kilometers per hour = 75 kilometers per hour.