In projectile motion, the value of acceleration along y-axis is _.
Correct answer: B. ay = -g
- A. ay = g
- B. ay = -g
- C. ay = -a
- D. None of these
Explanation
Acceleration along the y-axis in projectile motion is represented as 'ay = -g', where 'g' is the acceleration due to gravity acting downwards. This negative sign indicates that the acceleration is in the negative y-direction, opposite to the direction of the gravitational force. Therefore, Option B is correct. Options A, C, and D are incorrect as they do not consider the specific direction and magnitude of acceleration due to gravity in projectile motion.
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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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