What is the acceleration of a spacecraft during liftoff?

AI Thread Summary
To determine the acceleration of a spacecraft during liftoff, the problem states that it reaches an altitude of 450 meters in 4 seconds while uniformly accelerating from rest. The key equations of motion, which include displacement, velocity, and acceleration, are necessary to solve for acceleration. The user is uncertain about how to categorize altitude in terms of displacement and is seeking guidance on the relevant equations. Understanding that displacement is indeed the vertical distance traveled will help in applying the equations correctly. The discussion emphasizes the need for clarity on the relationship between displacement, time, and acceleration in this context.
elleleeanne
Messages
7
Reaction score
0

Homework Statement



Within 4 sec of liftoff, a spacecraft that is uniformly accelerating straight upward from rest reaches an altitude of 450 m [up]. What is the spacecraft 's acceleration?

Homework Equations



The five key equations, plus the velocity, speed, and acceleration equations

The Attempt at a Solution



I don't know what the altitude would be (Displacement? Distance?), so I can't solve the equation with the five key equations.
 
Physics news on Phys.org
Do you know an equation from the key equations that involves displacement+velocty+time+acceleration?

Hint: displacement = ??
 
Thank you so much!
 

Thread 'Rolling without slipping on a curved surface'

Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
View full post »

Thread 'Struggling to understand the concept of this question (ice cube in water optics question)'

TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
View full post »
Thread 'Correct statement about a reservoir with an outlet pipe'

Thread 'Correct statement about a reservoir with an outlet pipe'

The answer to this question is statements (ii) and (iv) are correct. (i) This is FALSE because the speed of water in the tap is greater than speed at the water surface (ii) I don't even understand this statement. What does the "seal" part have to do with water flowing out? Won't the water still flow out through the tap until the tank is empty whether the reservoir is sealed or not? (iii) In my opinion, this statement would be correct. Increasing the gravitational potential energy of the...
View full post »

Similar threads

Rearranging equations of accelerated motion
Replies
7
Views
8K
Problem with the power of car
Replies
3
Views
876
Zero velocity for a time interval, what about acceleration?
Replies
7
Views
2K
Acceleration in uniform circular motion is uniform or non-uniform?
2
Replies
55
Views
3K
Does Friction Affect Momentum in a Spring-Driven Spacecraft?
Replies
11
Views
2K
Relating acceleration to distance and time
Replies
5
Views
3K
Query related to Two-Dimensional Motion
Replies
9
Views
1K
Atwood's with a cylinder - Rotational Motion
Replies
13
Views
964
What is the Correct Acceleration of the Rocket During Its Launch Phase?
Replies
3
Views
2K
Model Rocket Launch: Maximum Height, Time, and Duration Calculations
Replies
1
Views
2K

Hot Threads

Recent Insights

Back
Top