Heather is at the bottom of a cliff and jerry is 30 m directly above her at the

Question

Heather is at the bottom of a cliff and jerry is 30 m directly above her at the top of the cliff. Jerry throws a marble vertically downward with a velocity 15 m/s and at the same instant Heather releases her marble. Draw a free body diagram.
a.) How long does it take for the two balls to meet?
b.) Where do they meet Heather is at the bottom of a cliff and jerry is 30 m directly above her at the top of the cliff. Jerry throws a marble vertically downward with a velocity 15 m/s and at the same instant Heather releases her marble. Draw a free body diagram.
a.) How long does it take for the two balls to meet?
b.) Where do they meet
a.) How long does it take for the two balls to meet?
b.) Where do they meet

Explanation / Answer

1] relative position = 30 m

relative velocity = 15 m/s

relative acceleration = 9.8+ 9.8 = 19.6

they will meet after = 30/15 = 2 s

b] balls meet at h = (0*2 )+ 4.9*2^2

= 19.6 m from Heather position

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