What is the acceleration of a spacecraft during liftoff?

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SUMMARY

The spacecraft in question accelerates uniformly from rest and reaches an altitude of 450 meters within 4 seconds. To determine the acceleration, the relevant kinematic equation is used: displacement = initial velocity × time + 0.5 × acceleration × time². Given that the initial velocity is zero, the equation simplifies to 450 m = 0.5 × acceleration × (4 s)². Solving this yields an acceleration of 56.25 m/s².

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elleleeanne
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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.
 
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Do you know an equation from the key equations that involves displacement+velocty+time+acceleration?

Hint: displacement = ??
 
Thank you so much!
 

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