a boy of mass 45kg is stranded on a beach as the tide comes in, a rescuer of mass 75kg is lowered down by rope from the top of the cliff they are both raised initially with a constant acceleration of 0.6ms^-2 find the tension in the rope for this stage of the ascent

i did this and got the tension to be 1248N which is right but how do i do this next part?

as they near the top of the cliff the tension in the rope is 1150N and they are moving with a constant deceleration calculate the magnitude of this deceleration

Question

a boy of mass 45kg is stranded on a beach as the tide comes in, a rescuer of mass 75kg is lowered down by rope from the top of the cliff they are both raised initially with a constant acceleration of 0.6ms^-2 find the tension in the rope for this stage of the ascent

i did this and got the tension to be 1248N which is right but how do i do this next part?

as they near the top of the cliff the tension in the rope is 1150N and they are moving with a constant deceleration calculate the magnitude of this deceleration