A box, which has a weight of 1,000 N, is being pushed across a level floor at a constant velocity by a force of 300N at an angle of 20.0° below the horizontal as shown below in Figure 1 below. 300 N 20.0° 300 N 20.0° 1,000 N 1,000 N Fig. 1 Fig. 2 (a) Determine the coefficient of kinetic friction between the box and the floor. (b) If instead, the box was being pulled by the 300N force at 20.0° above the horizontal as shown in Figure 2,

A box, which has a weight of 1,000 N, is being pushed across a level floor at a constant velocity by a force of 300N at an angle of 20.0° below the horizontal as shown below in Figure 1 below. 300 N 20.0° 300 N 20.0° 1,000 N 1,000 N Fig. 1 Fig. 2 (a) Determine the coefficient of kinetic friction between the box and the floor. (b) If instead, the box was being pulled by the 300N force at 20.0° above the horizontal as shown in Figure 2,