If an object is given an initial velocity of v₀ feet per second from a height of s₀ feet, then its height S after t seconds is given by the formula . A rock is thrown into the air at 42 feet per second from a height of 21 feet. How long does it take to reach the earth?

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The Answer of If an object is given an initial velocity of v₀ feet per second from a height of s₀ feet, then its height S after t seconds is given by the formula . A rock is thrown into the air at 42 feet per second from a height of 21 feet. How long does it take to reach the earth?

If an Object Is Given an Initial Velocity of V0

If an Object Is Given an Initial Velocity of V₀