Question

While the arrow moves towards its target, the force acting on it is due to gravity and due to ___________ of air.
A) gravitational force
B) muscular force
C) magnetic force
D) frictional force

Answer 1

When the arrow moves towards the target, the force acting on it, is due to gravity and resistive force of air. The is also a resistive force which is trying to retard the motion of the object.

Complete step by step answer:
For a body free to move in air, the forces acting on it are gravity due to its mass and the resistive force of air which constantly reaccelerates its motion.
The air friction is a special type of frictional force that acts upon objects as they travel through air. The force of air resistance is often observed to oppose the motion of an object.
Gravitational force is the force due to which gravity of earth pulls a mass towards itself, which is already mentioned in the statement of the question.
Muscular force is the force exerted by the muscles and is a contact force. It is the result of muscular action whenever the movement of the body occurs. Here the arrow is just in contact with air and no other physical surface.
Magnetic force is the force exerted on any moving charge moving in a magnetic field. Here no such magnetic field is present to exert a force on the arrow.

Hence the correct option is D.

Note: Air friction acts between the object and the air through which it is moving. It is also called drag. This force depends upon the object’s shape, material, speed with which it is moving and the viscosity of the medium.