# Projectile motion y axis

A vertically moving object projectile reaches a maximum height of 50 meters above its starting position

What is the projectiles initial speed?
What is the height above the starting point at 3.3 seconds?

TSny
Homework Helper
Gold Member
I have been overwelmed by all the kenimatic formulas and i'm not sure which one to use or even how to use some of them

CWatters
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Gold Member
Ok a hint...

What does the object have at the top that it didn't have at the bottom? Where did it get it from?

TSny
Homework Helper
Gold Member
I have been overwelmed by all the kenimatic formulas and i'm not sure which one to use or even how to use some of them

So, I assume that you are trying to use kinematic equations to solve the problem rather than energy concepts or some other method. Is this true? If so, can you state any specific kinematic equations that you think might be useful? Is the acceleration constant in this problem?