Physics, 18.03.2021 01:00 sergiogautosg15

A ball which is thrown upward reaches its maximum height
of 100 ft and then returns to the
Starting point. with what speed
was it thrown

Answers: 3

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Answers

Answer from: masogreene123

44.27 m/s

Explanation:

Let's set the upwards direction to be positive and the downwards direction to be negative.

Since we do not know the final velocity of the ball right before it hits the ground, we will use our knowledge that the final velocity of the ball is 0 m/s right before it changes direction to fall back to the ground.

a = -9.8 m/s²Δy = 100 ft v = 0 m/s v₀ = ?

Find what constant acceleration equation contains all four variables.

v² = v₀² + 2aΔy

Substitute the known variables into the equation and solve for v₀, the initial velocity.

(0)² = v₀² + 2(-9.8)(100) 0 = v₀² - 1960 1960 = v₀² v₀ = 14√10 = 44.27188724

The initial velocity of the ball 44.27 m/s.

Answer from: jakhunter354

44.27 m/s

Explanation:

Let's set the upwards direction to be positive and the downwards direction to be negative.

a = -9.8 m/s²

Δy = 100 ft

v = 0 m/s

v₀ = ?

Find what constant acceleration equation contains all four variables.

v² = v₀² + 2aΔy

Substitute the known variables into the equation and solve for v₀, the initial velocity.

(0)² = v₀² + 2(-9.8)(100)

0 = v₀² - 1960

1960 = v₀²

v₀ = 14√10 = 44.27188724

The initial velocity of the ball 44.27 m/s.

Answer from: Quest

gans

explanation:

vestigial organs (like your appendix) are organs that no longer serve a purpose.

Do 30 i will mark as the brainliest answer

Answer from: Quest

Honestly "global warming" may be a slight possiblity, however they called it "climate change" because its not real, in fact we had one of our coldest days here not too long ago, and the "issues" with this subject is a blindfold for actual problems.

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A ball which is thrown upward reaches its maximum height
of 100 ft and then returns to the

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