A body moves according to the equation x (t) = 2 + 5.0t + 4.7t^2. What is the average speed of the body between the moments t = 1.7s and t = 7s? If possible, answer with two decimal places.

Joe's shoulder is labeled S and two points on the cable are labeled P and B. The coordinates of the three points are given below and the tension in the cable is 200 N. Find the moment about Joe's shoulder. Point S P B X (m) 0.68 0 1.9 Y (m) 0.9 3.2 1.1 z (m) 1.4 0 1.4

Three children are riding on the edge of a merry-go-round that is 162 kg, has a 1.60 m radius, and is spinning at 21.3 rpm. The children have masses of 17.4, 28.5, and 38.8 kg. If the child who has a mass of 38.8 kg moves to the center of the merry-go-round, what is the new angular velocity in rpm?

Listen Q2. Two uniform thin disks A and B have masses of 3.2 kg and 4.1 kg respectively. They are each pinned at their respective centers, and when they roll in contact with each other, no slipping occurs. The motion is in vertical plane. The dimensions ra 12 cm and r2 = 36 cm. At this instant disk A has angular velocity w = 3.8 rad/s and %3D angular acceleration a = 1.2 rad/s2, both clockwise as shown. Takeg= 9.81 m/s. (1) Determine the magnitude of the angular velocity (in rad/s) of disk B. Your answer must include 2 places after the decimal point. 0, a .P A