1.

If a ball dropped in a right-triangular object and covers a slanting line (hypotenuse) in 7 second. The object (triangle) ABC has (angle) ABC=30° and CA=45 cm. Find the average speed of the ball​

Answer»

ong>Answer:

sinA = AC/CB

1/2 =45/CB

CB = 90

average speed = TOTAL distance/ time TAKEN

AV = 90/7

average speed = 12.85 m/s



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