Kinematics problem with constant acceleration

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SUMMARY

The discussion centers on a kinematics problem involving a ball thrown downwards from a height of 20 meters with an initial velocity of 15 m/s. The correct equation to model the height of the ball over time is h(t) = -4.9t² - 15t + 20, where -4.9 represents half of the acceleration due to gravity in meters per second squared. This equation accurately reflects the effects of constant acceleration on the ball's motion.

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livestrong136
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A ball is thrown downwards from a top of a 20m building with an initial velocity of 15m/s. What equation could be used to model its height?

My answer: h (t) = -4.9t2-15t+20
 
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livestrong136 said:
My answer: h (t) = -4.9t2-15t+20
Looks good to me.
 

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