Simple Gravity Problem: Finding an Object's Maximum Height

  • Thread starter Thread starter mwhowell
  • Start date Start date
  • Tags Tags
    Gravity
Click For Summary
SUMMARY

The discussion centers on calculating the time it takes for an object to reach its maximum height when thrown straight up, given that it rises 80 meters and the acceleration due to gravity is 10 m/s². The correct approach involves using the kinematic equation for vertical motion, specifically \( t = \frac{v}{g} \), where \( v \) is the initial velocity. The maximum height is reached at half the total time of flight, leading to a time of 4 seconds to reach the maximum height, not 8 seconds as initially suggested.

PREREQUISITES
  • Understanding of kinematic equations in physics
  • Knowledge of gravitational acceleration (g = 10 m/s²)
  • Ability to interpret motion graphs
  • Familiarity with the concept of maximum height in projectile motion
NEXT STEPS
  • Review kinematic equations for vertical motion
  • Study the concept of maximum height in projectile motion
  • Learn how to graph projectile motion and interpret motion graphs
  • Practice problems involving time of flight and maximum height calculations
USEFUL FOR

This discussion is beneficial for physics students, educators, and anyone interested in understanding the principles of projectile motion and kinematics.

mwhowell
Messages
17
Reaction score
0

Homework Statement



An object is thrown strait up. It rises 80m and falls back to its original height. Take the object's original height as the origin and use g=10m/s^2.

How long does it take the object to reach its max height?


Homework Equations





The Attempt at a Solution



I learned this in physics 1 and I feel destroying my dorm room because I know how to do this but I am having a complete mental block and can't seem to do anything with this. I am getting 8s but that can't be right because it does not fit on the graph I need to graph the problem on.
 
Physics news on Phys.org
Are you sure you're solving only for the max height? Or did you solve for the time the object returned to its original height?
 

Similar threads

Find Projectile Flight Time Given Only Maximum Height
  • · Replies 4 ·
Replies
4
Views
3K
Find the difference of heights of the objects
  • · Replies 5 ·
Replies
5
Views
2K
Find the Height of a Building by dropping a ball from the top
  • · Replies 7 ·
Replies
7
Views
3K
Kinematics: find maximum height
  • · Replies 2 ·
Replies
2
Views
5K
Is the y-component of projectile motion acceleration equal to gravity?
  • · Replies 8 ·
Replies
8
Views
3K
Potential energy of ball thrown upwards
  • · Replies 5 ·
Replies
5
Views
14K
Projectile Motion Kinematics: Finding maximum height
  • · Replies 14 ·
Replies
14
Views
4K
Finding the intermediate height of a ball in terms of its maximum height
  • · Replies 3 ·
Replies
3
Views
1K
Doubling the time spent in the air by a thrown object
  • · Replies 3 ·
Replies
3
Views
2K
Find Initial Velocity Given Height, Range, and Initial Angle
  • · Replies 4 ·
Replies
4
Views
3K