a ball is thrown straight up with an initial velocity of 20.0 ft/s. how long dose it take to reach maximum height?

Physics

1 answer:

timama [110]1 year ago

5 0

Answer:

At the maximum height the ball will have an instantaneous velocity of zero. The formula for instantaneous velocity is

v = v₀ + at

Where v is the instantaneous velocity, v₀ is the initial velocity, a is the acceleration due to gravity, -9.8 m/sec², and t is the time.

We need instantaneous velocity to = 0.

0 = 20 - 9.8t : Isolate t => 1st step: Add 9.8t to both sides

9.8t = 20 : Isolate t => 2nd step: Divide both sides by 9.8

t = 2.04 seconds (approximately)

Explanation:

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