Projectile Motion Kenimatics in Two Deminisions?

Click For Summary

Homework Help Overview

The discussion revolves around a projectile motion problem in kinematics, specifically focusing on finding the maximum height of a projectile given its initial velocity, launch angle, and gravitational acceleration.

Discussion Character

  • Exploratory, Mathematical reasoning, Assumption checking

Approaches and Questions Raised

  • The original poster attempts to apply a formula involving the initial velocity and angle to calculate the maximum height but expresses concern about the low result. Some participants suggest that the vertical component of the initial velocity may not be sufficient to achieve a significant height.

Discussion Status

Participants are exploring different interpretations of the formula for maximum height. There is some guidance offered regarding the correct application of the sine function and squaring the vertical component of the initial velocity. However, there is no explicit consensus on the correctness of the approach or the final answer.

Contextual Notes

There is mention of potential confusion regarding the formula used and the need to clarify the components of the initial velocity in relation to gravity. The original poster also indicates uncertainty about the formula's application.

alexas
Messages
52
Reaction score
0

Homework Statement


Find the maximum height of a projectile that as the following velocity and is launched at that angle.
Intial Velocity: 4.736 m/s
Angle (in degrees): 40
Gravity: -9.8 ?


I was thinking...

{((-4.736m/s)^2)(sin(40))}/{(-2)(g)} but the hieght comes out extremely low...

I have a feeling i am using a wrong formula... Any ideas?
 
Physics news on Phys.org
Welcome to PF.

You really should be squaring the (sin40*Vo) but otherwise it won't go all that high will it, if the vertical component of Vo is about 1/3 of what gravity will knock down in 1 sec?
 
Sorry I meant to say the sin40 was also squared. Is the answer I get for thre sin^2 times v^2 divided by 2g the correct one?
 
alexas said:
Sorry I meant to say the sin40 was also squared. Is the answer I get for thre sin^2 times v^2 divided by 2g the correct one?

Looks ok to me.
 

Similar threads

Find the height of a lamp based on the velocities of projectiles
  • · Replies 40 ·
2
Replies
40
Views
3K
Projectile Motion Experiment: Results Too High?
  • · Replies 2 ·
Replies
2
Views
2K
Find Projectile Flight Time Given Only Maximum Height
  • · Replies 4 ·
Replies
4
Views
3K
I need opinions on a Projectile Motion problem that I made up
  • · Replies 11 ·
Replies
11
Views
2K
Projectile Motion on the Moon: Finding the Optimal Launch Angle Using Equations
  • · Replies 2 ·
Replies
2
Views
3K
Relationship between horizontal range and angle of launch
  • · Replies 7 ·
Replies
7
Views
4K
Relationship between Launch height and range of a projectile
  • · Replies 15 ·
Replies
15
Views
27K
How Do You Solve a Projectile Motion Problem?
  • · Replies 3 ·
Replies
3
Views
4K
What Are the Optimal Launch Angles for a Projectile to Pass Through an Opening?
  • · Replies 25 ·
Replies
25
Views
3K
Maximize Range of Projectile Launched from Cliff
  • · Replies 17 ·
Replies
17
Views
4K