How Long to Reach Maximum Height for a 70 m/s Projectile at 45 Degrees?

AI Thread Summary
To determine the time it takes for a projectile launched at 70 m/s at a 45-degree angle to reach maximum height, the initial vertical velocity (Vyo) must be calculated using the equation Vyo = Vo * sin(theta). The discussion highlights confusion about the correct formulas and the need for clarity in the approach. Participants emphasize the importance of showing previous attempts to identify errors and suggest using trigonometric ratios and SUVAT equations for accurate calculations. A thorough understanding of the definitions and relationships in projectile motion is crucial for solving the problem. Engaging with the guidelines for problem-solving is also recommended for better assistance.
Cortana
Member warned that posters must show what they have tried

Homework Statement


A projectile was launched at 70 m/s at an angle of 45 degrees above the horizontal, how long does it take the projectile to reach maximum height?

Homework Equations


Vyo= initial vertical velocity Vo=initial velocity

The Attempt at a Solution


I tried using the equation Vxo=VoSIN(theta)
 
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Cortana said:
I tried using the equation Vxo=VoSIN(theta)
No.
You need to show what you've tried so that we can see what went wrong.
 
I don't even know where to start tbh, i don't even know which formula to use
 
Cortana said:
I tried using the equation Vxo=VoSIN(theta)
Did you mean that? It could be right, depending on how exactly you are defining theta. What angle do you think it represents?
Double check your source for that equation.
 
try using trig ratios and SUVAT equations
 
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