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An object is falling from a height of 7. 5 meters. At what height will its velocity be 7 meters/second? A. 49 meters B. 7. 5 meters C. 7. 0 meters D. 5. 0 meters E. 2. 5 meters.

Sagot :

Eduard22sly

The object will be at a height of 2.5 m for its velocity to be 7 m/s

The correct answer to the question is Option E. 2.5 m/s

We'll begin by calculating the time taken for the object to attain a velocity of 7 m/s.

Velocity (v) = 7 m/s

Acceleration due to gravity (g) = 9.8 m/s²

Time (t) =?

v = gt

7 = 9.8 × t

Divide both side by 9.8

t = 7 / 9.8

t = 0.71 s

  • Finally, we shall determine the height at which the velocity of the object is 7 m/s.

Time (t) = 0.71 s

Acceleration due to gravity (g) = 9.8 m/s²

Height (h) =?

h = ½gt²

h = ½ × 9.8 × 0.71²

h = 4.9 × 0.5041

h = 2.5 m

Therefore, the ball will be at a height of 2.5 m for its velocity to be 7 m/s

The correct answer to the question is Option E. 2.5 m/s

Learn more: https://brainly.com/question/14423998

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