Physics, 19.09.2021 03:30 jacobmacalpine
To find the height of an overhead power line, you throw a ball straight upward. The ball passes the line on the way up after 0.85s, and passes it again on the way down 1.6s after it was tossed
Part A
What is the height of the power line?
Express your answer using two significant figures.
Answers: 1
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The base of a 50-meter tower is at the origin; the base of a 50-meter tree is at (0, 50, 0). the ground is flat and the z-axis points upward. the following parametric equations describe the motion of six projectiles each launched at time t = 0 in seconds. (i) r (t) = (50 + t2)k (ii) r (t) = 2t2 j + 2t2k (iii) r (t) = 50 i + 50 j + (50 − t2)k (iv) r (t) = 2t j + (50 − t2)k (v) r (t) = (50 − 2t) i + 2t j + (50 − t)k (vi) r (t) = t i + t j + tk (a) which projectile is launched from the top of the tower and goes downward? at time t = , the projectile hits the ground at point (x, y, z) = . (b) which projectile hits the top of the tree?
Answers: 2
To find the height of an overhead power line, you throw a ball straight upward. The ball passes the...
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