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Ruth throws a baseball straight up at 20.0 m/s. What is the ball’s velocity after 4.0 s?

Ruth throws a baseball straight up at 20.0 m/s. What is the ball’s velocity after 4.0 s?
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Ruth throws a baseball straight up at 20.0 m/s. What is the ball’s velocity after 4.0 s?

User Delphidabbler
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1 Answer

3 votes
Assuming a negligible air resistance, taking upwards as the positive direction,
Using the kinematics formula
v=u+at
Subbing in values,
V=(20.0)+(-9.81)(4.0)
= -19.24 ms^-1
The ball is falling down to the ground at 19.24ms^-1
User Patrick Hollweck
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8.9k points
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