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Moving point problem in eighth grade mathematics
As shown in the figure, let q move for t seconds.

Exercise for 3 seconds, speed 1cm/s, and stop at point p. AP = 3cm, Pb = 3cm.

Q point motion ts, speed 2cm/s, ∴? BQ=2t？ ,? QC= 12-2t

At RT△QBP and RT△DCQ,

QP？ =BQ？ +PB？ =3? +(2t)？ =9+4t？ ,

QD？ =DC？ +CQ？ =6? +( 12-2T)？ =4t？ -48t+ 180

∴9+4t=4t？ -48t+ 180 is used to solve equations? t= 17 1/48=？ 57/ 16? (s)

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