N 2. The weight of the block in the drawing is 100 N. The coefficient of static friction
between the block and the vertical wall is 0.500. What minimum force F is required to:
A. Prevent the block from sliding down the wall.
BLOOR
B. Start the block moving up the wall
Vertical
wall
40.0°

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?