Show that the show that the expression v2 = u^2 + 2as is dimensionally correct, where v and v, represent the final and initial velocities, a is
acceleration and s is the displacement.

Hydrogen and helium are both members of?

Explain what will happen if decomposers were apsent from a forest ecoysystem.

Aballoon is rising vertically upwards at a velocity of 10m/s. when it is at a height of 45m from the ground, a parachute bails out from it. after 3s he opens his parachute and decelerates ata a constant rate 5m/s.when. (a) what was the height of the parachutist above the ground when he opened his parachute? (b)how far is the parachutist from the balloon at t=3s? (c)with what velocity does the parachutist hit the ground? (d)after how long does the parachutist hit the ground after his exist from the balloon?