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A rockets height above ground is modeled by \(h(t)=-4.9t^2+9.8t\)

1) When is the rocket travelling 9.8 m/s down?

2)When is the rocket travelling 9.8 m/s down?

3) What is the average speed of the rocket over the first second?

 

Are these questions asking to find the acceleration?what formulas can i use to solve?

 Apr 9, 2020
 #1
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I think you can use the acceleration formula! You can do some research because that is how we learn! (There are great lessons about it on khan academy, not an advert). :)

 Apr 9, 2020
 #2
avatar+337 
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This might help! https://www.khanacademy.org/science/ap-physics-1/ap-one-dimensional-motion/average-and-instantaneous-acceleration/v/acceleration

nchang  Apr 9, 2020

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