Difference in speeds
A ball is "A" is thrown vertically upwards and after a time interval of 5 seconds another ball B is thrown upwards. They are thrown upwards with different initial velocities. However both the balls reach the highest point at the same time. What is the difference in the speeds between Ball B and Ball A. Express you answer in meters/second and assume that the value of g is equal to 9.8 m/s^2
The answer is 49.
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1 solution
t1 = u1/g t2 = (u2)/g
t2 - t1 = 5 seconds.
(u2-u1)/g = 5 , therefore u2-u1 = 49 m/s.