An _ missile is called a ballistic missile.
Correct answer: D. Un-powered and un-guided.
- A. Un-powered and guided.
- B. Un-guided and powered.
- C. Powered and guided.
- D. Un-powered and un-guided.
Explanation
A ballistic missile follows a ballistic trajectory, these missiles are propelled by a rocket engine for only the first part of its flight; which means they are only guided during the first part of the flight. When the fuel is exhausted, no more thrust is provided and the missile enters free flight where, for the rest of the flight the unpowered missile follows an arcing trajectory. Before entering the re-entering phase. Therefore, a ballistic missile is an unguided and unpowered missile.
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About Projectile Motion
Projectile motion combines uniform horizontal motion with vertically accelerated motion under gravity, assuming air resistance is neglected. Questions use the components of initial velocity to find time of flight, maximum height, horizontal range and position, while distinguishing projectile motion from general circular or one dimensional motion.
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