A particle of mass m is projected from point A with an initial velocity v0 perpendicular to line OA and moves under a central fo
rce F along a semicircular path of diameter OA. Observing that r = r0 cos θ and r 2 q = h, show that the speed of the particle is v = v0 /cos2 θ
1 answer:
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Answer:
B: a = 1, b= 7, c = -2
Explanation:
Knowing This:
<u>solve for b</u>
- -b = -7
- b = 7
<u>solve for a</u>:
- 2a = 2
- a = 1
<u>solve c</u>:
- b² - 4ac = 57
- 7² - 4(1)(c) = 57
- -4c = 57 - 49
- -4c = 8
- c = 8/-4 = -2