alleryꯇ꯭ꯔꯦꯟ ꯑꯃꯒꯤ ꯂꯝꯕꯤ ꯑꯁꯤ ꯃꯤꯇꯔ 180ꯅꯤ꯫ ꯇ꯭ꯔꯦꯟ ꯑꯁꯤ ꯄꯨꯡ ꯑꯃꯗꯥ ꯀꯤꯂꯣꯃꯤꯇꯔ 54 ꯆꯦꯜꯂꯤ꯫ ꯃꯤꯑꯣꯏ ꯑꯃꯅꯥ ꯄꯨꯡ ꯑꯃꯗꯥ ꯀꯤꯂꯣꯃꯤꯇꯔ 18ꯒꯤ ꯈꯣꯡꯖꯦꯂꯗꯥ ꯇ꯭ꯔꯦꯟ ꯑꯁꯤꯒꯥ ꯆꯞ ꯃꯥꯟꯅꯕꯥ ꯃꯥꯏꯀꯩꯗꯥ ꯆꯦꯜꯂꯤ꯫ ꯇ꯭ꯔꯦꯟ ꯑꯗꯨꯅꯥ ꯃꯤꯑꯣꯏ ꯑꯗꯨꯕꯨ ꯃꯄꯨꯡ ꯐꯥꯅꯥ ꯂꯥꯟꯊꯣꯀꯄꯗꯥ ꯁꯦꯀꯦꯟꯗ ꯀꯌꯥ ꯆꯪꯏ?
A15 s
B18 s
C12 s
D20 s
Answer & Solution
Correct answer: B. 18 s
ꯔꯤꯂꯦꯇꯤꯕ ꯁ꯭ꯄꯤꯗ 36 ꯀꯤꯂꯣꯃꯤꯇꯔ/h = 10 m/s, ꯑꯃꯁꯨꯡ 180 / 10 = 18 ꯁꯦꯀꯦꯟꯗꯁꯤꯡ꯫
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