A ball is thrown vertically upwards. Which of the following graphs represents the velocity-time graph of the ball during its flight(air resistance is neglected).
Correct answer: D. Graph D
- A. Graph A
- B. Graph B
- C. Graph C
- D. Graph D
Explanation
When a ball is thrown vertically upwards , velocity decreases linearly with time (due to constant downward acceleration g). At the topmost point, velocity becomes zero. Then velocity increases linearly in the negative direction (downward). The velocity-time graph is a straight line with negative slope, crossing the time axis.
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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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