Two projectiles are projected at angles of 20 and 70 respectively with the same initial velocity. Which one has the longer range?
Correct answer: C. Both have the same range
- A. The one fired at 20°
- B. The one fired at 70°
- C. Both have the same range
- D. None of these
Explanation
Angles that add to 90°(complementary) yield equal range for the same speed; 20°and 70° are complementary, so their ranges are equal.
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Displacement, velocity and acceleration describe motion, including the horizontal and vertical components of projectile motion. The chapter connects these quantities with Newton's laws, momentum and impulse, then applies conservation of momentum to collisions, distinguishing elastic collisions from inelastic ones.
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