Range of a projectile on a horizontal plane is same for the following pair of angles:
Correct answer: B. 43° and 47°
- A. 15° and 18°
- B. 43° and 47°
- C. 20° and 80°
- D. 52° and 62°
Explanation
Ranges are equal for complementary angles θ and 90° − θ. 43° and 47° sum to 90°, hence they give the same range for identical speeds.
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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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