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a ball is thrown into the air with an initial velocity of 30m\s and a horizontal velocity of 10m\s. What's it's speed after 4 seconds?
15 years ago

Answers

bobpursley
The horizontal velocity remains unchanged, but the vertical changes.

In the vertical
vf=30-9.8t
find the vertical velocity, add it to the horizontal as VECTORS.
15 years ago
Savanah
.....huh? that would make the vertical velocity negative
15 years ago
bobpursley
of course: negative means downward.
15 years ago

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