Commercial airplanes are sometimes pushed out of the passenger loading area by a tractor. the 1800 kg tractor exerts a force of 1.95 104 n backward on the pavement, and the system experiences forces resisting motion that total 2400 n. if the acceleration is 0.240 m/s2, what is the mass of the airplane in kilograms? calculate the force (in n) exerted by the tractor on the airplane, assuming 2100 n of the friction is experienced by the airplane.

Answertraveling around a circular trackexplanation"traveling around a circular track" is the best answer as you could be traveling around a circular track at a constant speed. your velocity would therefore have the same magnitude but will always be constantly direction. since acceleration is the rate of change of velocity, the rate of change will only involve the direction of velocity and not the magnitude.wrong choices: "an object at rest" does not accelerate at all"increasing speed while traveling around a curve" means that the acceleration will not be constant due to only change in direction; it will be constant due to both magnitude and direction"an object in free fall" does not necessarily change direction