11. From a height, two balls are thrown with equalspeed, one vertically upwards and other verticallydownwards. They take time t1, and t2 respectivelyto reach the ground. If a third ball is dropped fromsame height, then time taken to reach the groundwill be(1) t1+t2/2(2) √t1t2(3) 2t1t2/t1+t2

11. From a height, two balls are thrown with equalspeed, one verticall

1.	11. From a height, two balls are thrown with equalspeed, one vertically upwards and other verticallydownwards. They take time t1, and t2 respectivelyto reach the ground. If a third ball is dropped fromsame height, then time taken to reach the groundwill be(1) t1+t2/2(2) √t1t2(3) 2t1t2/t1+t2
Answer» remember this that apply DIMENSIONS and CHECK ANSWER .... tsquare = t×t so t3=t1×t2

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11. From a height, two balls are thrown with equalspeed, one vertically upwards and other verticallydownwards. They take time t1, and t2 respectivelyto reach the ground. If a third ball is dropped fromsame height, then time taken to reach the groundwill be(1) t1+t2/2(2) √t1t2(3) 2t1t2/t1+t2​

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11. From a height, two balls are thrown with equalspeed, one vertically upwards and other verticallydownwards. They take time t1, and t2 respectivelyto reach the ground. If a third ball is dropped fromsame height, then time taken to reach the groundwill be(1) t1+t2/2(2) √t1t2(3) 2t1t2/t1+t2