2d Projectles Motion/Kinematics

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SUMMARY

The discussion focuses on calculating the final velocity of a rocket sled driven by Sara, which accelerates at 8 m/s² up a 15-degree ramp from rest over a distance of 25 meters. The key formula used is V² = 2*a*x, where 'a' is the acceleration and 'x' is the distance traveled. The angle of the ramp is deemed irrelevant for the calculation of final velocity during the acceleration phase, but it becomes significant once the sled leaves the ramp.

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HI guys, I am having a lot of trouble with determining initial velocity, x and y components etc. Can someone please help me with this

Sara drives a rocket sled from rest 25 m up a 15 degree ramp at an acceleration of 8 m/s2. Whats the final velocity?

Thank you
 
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Jessicaelleig said:
HI guys, I am having a lot of trouble with determining initial velocity, x and y components etc. Can someone please help me with this

Sara drives a rocket sled from rest 25 m up a 15 degree ramp at an acceleration of 8 m/s2. Whats the final velocity?

Thank you

The way the problem is worded means that the angle is of no concern because the m*g*Sin15 term is absorbed by the statement that it accelerates at 8m/s2 up the ramp.

This suggests that you are only concerned with V2 = 2*a*x

Of course the angle is of concern with regard to what happens after it leaves the ramp.
 

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