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cloveb cloveb
wrote...
Valued Member
Posts: 782
6 years ago
Ball A is dropped with zero initial velocity from the top of a building of height 40 m. At the same instant ball B is thrown straight up from the ground. The balls collide after 2 seconds. What was the initial speed of ball B in m/s?

(1) 20 (2) 30 (3) 40 (4) 10 (5) 50

PHY 2053 Exam
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