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Which of the following is not an example of projectile motion?
- A A volleyball served over a net.
- B A baseball thrown in the air.
- C A hot-air balloon drifting toward Earth.
- D A long jumper in action.
That's Correct!
It's Wrong!
A hot-air balloon drifting toward Earth is not an example of projectile motion because it does not have an initial horizontal velocity. In projectile motion, an object is launched with an initial velocity and then follows a curved path due to the influence of gravity. The volleyball, baseball, and long jumper all have an initial horizontal velocity and are subject to gravity, causing them to follow a curved trajectory. However, a hot-air balloon does not have an initial horizontal velocity and is carried by wind currents, resulting in a more vertical descent rather than a curved path.