m = 10.5 kg, F = 23.4 N [Left], F2 = 7.43 N [Down], F3= 18.2 N [Up], F4=42.6 N [Left 25.0 Up], k=0.210 5. Layla and Yahya both attempt to move an identical 44.0 kg crate across identical surface. Layla exerts a 95.0 N force by pushing with a stick at an angle bellow horizontal. Yahya exerts a 95.0 N by pulling on a cord at the same angle above horizontal. Yahya's crate slides across the ground, but Layla's will not move. Explain the above observation, using the principle of forces. Friction involved. (5) 6. A force of 16.5 N is applied on a 3.64 kg box to move it up an inclined plane at a constant velocity. Calculate the coefficient of friction between the box and the plane if inclination of the plane is 15.0 to the horizontal. (5) 7. A passenger in a bus notices that a ball which has been at rest in the aisle suddenly starts to roll toward front of the bus. What can the passenger conclude about the motion of the bus from this observation? (3)