A 0.6 kg, 0.24 m diameter green ball is thrown upward with an initial velocity o

Question

A 0.6 kg, 0.24 m diameter green ball is thrown upward with an initial velocity of 21.4 m/s . After a delay time of 2.6 s, a 0.75 kg, 0.4 m diameter red ball is
thrown upward with an initial velocity of 17.3 m/s . Each ball was initially at the origin at height zero.

a) What were the position and velocity of the green ball at time 2.6 s?

(__) m


(__) m/s

b) How much time after the red ball was thrown were the two balls at the same height?

(__) s

c) What were the positions of the two balls when they both had the same height?

(__) m

d) What were the velocities of the two balls when they had the same height?

green ball (__) m/s


red ball (__) m/s

Explanation / Answer

Hi,

Since this the case of a body thrown vertically upwards, the mass and size of the ball doesnt matter. What matters is their initial velocity. Also since the motion is only along y-direction, the x-component is always zero in the entire problem.

Given the initial velocity of the green ball = 21.4m/s

    and the initial velocity of red ball = 17.3m/s.

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