If the value of acceleration due to gravity 'g' is reduced to half, the time of flight T of projectile becomes:
Correct answer: C. 2T
- A. T/2
- B. T/4
- C. 2T
- D. 4T
Explanation
2T Explanation: The time of flight (T) of a projectile is given by the formula: T = 2v₀sin(θ) / g, where v₀ is the initial velocity, θ is the launch angle, and g is the acceleration due to gravity. If 'g' is reduced to 'g/2', we can substitute this into the formula: T' = 2v₀sin(θ) / (g/2). This simplifies to T' = 4v₀sin(θ) / g, which can be rewritten as T' = 2 * (2v₀sin(θ) / g) = 2T. Therefore, the time of flight doubles.
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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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