Max Height & Initial Speed Calculation | Bottle Rocket Lab Help

  • Thread starter Thread starter heatpro
  • Start date Start date
  • Tags Tags
    Lab Rocket
Click For Summary
SUMMARY

The discussion focuses on calculating the maximum height and initial speed of a bottle rocket based on a total flight time of 6.52 seconds. The relevant equations include the kinematic equation for height, d = 1/2gt², and the formula for acceleration, a = change in velocity/time. The calculated maximum height is 52.1 meters, derived from substituting the gravitational acceleration (9.80 m/s²) and half the flight time (3.26 seconds). The initial speed is calculated as 31.9 m/s, although there is uncertainty regarding the application of significant figures in both calculations.

PREREQUISITES
  • Understanding of kinematic equations in physics
  • Knowledge of gravitational acceleration (g = 9.80 m/s²)
  • Familiarity with significant figures in scientific calculations
  • Basic algebra for solving equations
NEXT STEPS
  • Review kinematic equations for projectile motion
  • Study the concept of significant figures in physics calculations
  • Learn about free fall and its implications on height and velocity
  • Explore practical applications of these calculations in rocketry
USEFUL FOR

Students studying physics, particularly those working on projectile motion and kinematics, as well as educators seeking to clarify these concepts in a practical context.

heatpro
Messages
3
Reaction score
0

Homework Statement


Calculate the maximum height and the initial speed of the rocket. Show The equaltions and then show your substitutions. The total flight time was 6.52 seconds. the height time will be expressed in meters and feet and the velocity will be expressed at m/s, feet/second, miles/hour, km/hour.


Homework Equations


d=1/2gt^2 - only when initial velocity is 0 and object is at free fall. So i would have to use
a=change in velocity/time
a=gravity
g = -v -(+v)/t ====> v = gt/-2

The Attempt at a Solution



d= h = 1/2(9.80m/s^2)(3.26s^2) = 52.1m - 3 sig figs when multiplying correct?

v= (-9.80m/s^2)(6.52s)/-2

v= 31.9m/s => again not sure on the significant figs part.

please tell me if i am doing this correctly. thank you very much
 
Physics news on Phys.org
bump its due tomorrow
 

Similar threads

Distance between rocket and object
  • · Replies 30 ·
2
Replies
30
Views
3K
Hitting a rocket with a projectile
  • · Replies 53 ·
2
Replies
53
Views
5K
A ball is thrown w/initial speed vi at an angle 𝜃i with the horizontal
  • · Replies 5 ·
Replies
5
Views
2K
What was the initial velocity of the rocket
  • · Replies 9 ·
Replies
9
Views
3K
How to calculate velocity of infinite-stage rocket?
  • · Replies 2 ·
Replies
2
Views
1K
Constant acceleration in a rocket
  • · Replies 4 ·
Replies
4
Views
2K
What is the Correct Acceleration of the Rocket During Its Launch Phase?
  • · Replies 3 ·
Replies
3
Views
3K
Find the initial velocity of a water rocket (mass changes)
  • · Replies 8 ·
Replies
8
Views
3K
Upward and downward movement of a rocket with the equation of motion
  • · Replies 13 ·
Replies
13
Views
2K
Oblique soccer shot calculation task
  • · Replies 38 ·
2
Replies
38
Views
4K