Physics Kinematics in One Dimension

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SUMMARY

The discussion centers on a physics problem involving a 1000kg weather rocket launched vertically with a constant acceleration for 16 seconds. The rocket reaches an altitude of 5100m after 20 seconds, prompting questions about its acceleration during the initial phase and its speed at that altitude. The key calculations involve using kinematic equations to determine the rocket's acceleration and final speed, with the assumption of negligible air resistance.

PREREQUISITES
  • Understanding of kinematic equations in physics
  • Knowledge of constant acceleration concepts
  • Ability to perform basic algebraic manipulations
  • Familiarity with units of measurement in physics (meters, seconds, kilograms)
NEXT STEPS
  • Study the kinematic equation: \( s = ut + \frac{1}{2}at^2 \)
  • Learn how to derive final velocity using \( v = u + at \)
  • Explore the concept of free fall and its implications on projectile motion
  • Investigate the effects of air resistance on projectile motion for a more comprehensive understanding
USEFUL FOR

Students studying physics, educators teaching kinematics, and anyone interested in understanding motion under constant acceleration.

aeubz
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Wow... I'm fried from doing this problem... Any help would be nice...

A 1000kg weather rocket is launched straight up. The rocket motor provides a constant acceleration for 16s, then the motor stops. The rocket altitude 20s after launch is 5100m. You can ignore any effects of air resistance.
a) What was the rocket's acceleration during the first 16s?
b) What is the rocket's speed as it passes through a cloud 5100m above the ground.

My work is scanned... (#7 circled)

Personally, I think not enough info is given..
 

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There is enough info.

What have you tried so far?

Have you got an expression for the speed of the rocket after 16 seconds?
 

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