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Nesterboy [21]
3 years ago
8

2) The horizontal and vertical components of the initial velocity of a football are 16 m/s and 20 m/s respectively. How long doe

s it take for the football to rise to the highest point of its trajectory?
Physics
1 answer:
ValentinkaMS [17]3 years ago
5 0

Answer: 2.04 s

Explanation:

Let the initial velocity be v, Angle of projectile be

Then the horizontal component = v cos θ = 16 m/s

Vertical component of velocity = v sin θ = 20 m/s

Time taken to reach the highest point is half the time taken for total flight.

Time for total flight,

t = \frac{2vsin \theta}{g}

t'=\frac{vsin \theta}{g} = \frac {20 m/s}{9.8 m/s^2} = 2.04 s

Thus, the football takes 2.04 s to rise to the highest point of its trajectory.

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8 0
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A resonance tube can be used to measured the speed of sound in air. A tuning fork is held above the opening of the tube and stru
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