car travels 80 meters due north in 12 seconds then the car turns around and travels 30 Mi do South in 4 seconds calculate the av
1 answer:
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Answer:
Vertical Height = 0.784 meter, Speed back at starting point = 10 m/s
Explanation:
Given Data:
V is the overall velocity vector, and
are its initial vertical and horizontal components
To find:
Max Height achieved
Calculation:
1) Using the equation of motion, we know
2) In terms of gravity height
and the vertical component of Velocity
.
3) As as at maximum height the vertical component of velocity is zero maximum height achieved
putting values
4)
5) As for the speed when it reaches back its starting point, it will have a speed similar to its launching speed, the reason being the absence of air friction (Air drag)