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3 years ago

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A ball is thrown upwards at a speed of 12 m/s. How long until it reaches its highest point?

1 answer:

IrinaK [193]3 years ago

3 0

The acceleration due to gravity on Earth is 9.8 m/s per second.
That means that an object out in the open gains 9.8 m/s of speed
downward, or loses 9.8 m/s of speed upward, every second.

The ball starts out with 12 m/s of speed upward. It loses 9.8 m/s
of speed upward every second. After (12 / 9.8) = 1.22 seconds,
it has run out of upward speed, and begins moving downward.

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It is given that,

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