What determines the path that an object in projectile motion follows?

a) gravity only

b) inertia and air resistance

c) gravity and inertia

d) gravity and air resistance

C) gravity and inertia

Explanation:

- Inertia affects the motion on the horizontal axis. In fact, there are no forces acting on the projectile along the horizontal direction: therefore, the projectile will continue its motion with constant velocity for inertia.

- Gravity affects the motion on the vertical axis: in fact, there is only one force acting on the projectile along the vertical direction (gravity, which points downward), so along this direction the motion is uniformly accelerated, with constant acceleration g=9.8 m/s^2 towards the ground.

the answer is b ) square root of 5

b.transmitters send radio waves, and receivers capture radio waves.