Break the initial and final velocities into x and y components to find Δv. Use v2-v1 on to find that change in velocity on both x and y, then use trig to find hypotenuse and that will be your Δv. Good luck
A very simple way to solve this, assuming this is a closed system, would be to use the attached formula (Egmax=Ekmax); rearrange algebraically. I would assume the force the ground exerts on her would be gravity, so F is mg or F=Wg.
Hope this helps.
If you're getting 471, it could just be a matter of how you're rounding some of the variables like pi or the radius of the Earth.
I used the exact same equation using the pi option on my calculator and for r, I used 6.378x10^6 and I got 463.82m/s.
Hope this helps!
I am doing a problem which involved determining how fast a rocket was launched off the Earth to reach a maximum height.
I am looking for some assistance with some simple algebra.
The formula used is;
Etotal = -Gm1m2/r+0.5m2v^2
To isolate for v, would my equation be...
Hey, I was just wondering if someone could give me feedback on a problem. For some reason the answer is not in the back of the text.
Homework Statement
An x-ray with a wavelength of 2.5 x 10-8 m is absorbed by a stationary electron. Determine the final velocity of the electron.
Vxray=3.0x10^8...
Simplest way to solve this problem,
Use work energy theorem,
fcosθd=(0.5)mv^2 (cosθ= 1 assuming all force is in the same direction as the displacement)
Rearrange algebraicly and you'll get the answer.
Hope this helps!