3) [9 points] A person, mass 100 kg, jumps off a stool. a) Which experiences the greater force, the person or the Earth? Why? b) Which experiences the greater acceleration? Why? c) What is the person's acceleration? 4) [5 points] A person is hanging from a rope. They begin to climb by pulling themselves up the rope, hand over hand. When they start climbing, is the tension in the rope greater than, equal to, or less than it is when they are stationary? Why? 5) [8 points] On a distant planet a projectile is dropped from rest. After 1.0 second it has traveled 7.0 m. a) What is the acceleration of gravity on this planet? b) What is the final velocity?6) [12 points] An airplane has a speed of 620 km/hr at an angle of 35.0* north of east with respect to the ground. The wind is a steady 95 km/hr and is blowing due north. What is the plane's velocity with respect to the air? N 35'N of E. E7) [15 points] A soccer ball is kicked toward a goal with an initial velocity of 14 m's at an angle of 409. The ball passes over the goal and lands on the roof of a 2.5 m tall storage shed, located behind the goal. Find the location, x, where the ball makes contact with the roof. 2.5 m X8) [20 points] Three blocks are attached with massless ropes, as shown, over massless, frictionless pulleys. A force, F, is applied which is just enough to prevent the blocks from moving. The coefficients of static and kinetic friction between the incline and box 1 are : = 0.4 and uk = 0.2, respectively. The incline makes an angle of 50 with the horizontal. The masses of the blocks are: Block 1 = 250 N Block 2 = 6 kg Block 3 = 3 kg a) Find the force, F. 2 3 500 b) The force. F, is removed. Find the acceleration and the tensions in the ropes