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Mathematics, 25.02.2020 06:10 spazzinchicago

HELP NEED THIS ANSWERED ASAP! I’m stuck

Judith is standing on a balcony of a building. the height of the building is 20 meters high. she throws a ball at a velocity of 15 meters per second. how many seconds will it take for the ball to hit the ground? ( assume gravity is 9.8 meters per second squared.

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