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Question #5b0b1

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1 Answer

Apr 14, 2017

#105m#

Explanation:

Using the applicable kinematic expression

#h=ut+1/2g t^2#
where #h# is the height after time #t#. #u# is initial velocity and #g# is acceleration due to gravity.

Inserting giving numbers and remembering that gravity is acting against the direction of motion

#h=50xx7+1/2(-10) (7)^2#
#=>h=350-245#
#=>h=105m#

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