Three masses are rigidly attached to a light board in the xy-plane. A 2kg mass is at (-4m, 2m), a 3kg mass is at (0,-6m) and a 5kg mass is at (3m, 0). If it is rotated about the y-axis at 1.4rad/s, then what is its rotational kinetic energy?

Adelivery truck leaves a warehouse and travels 2.60 km north. the truck makes a left turn and travels 1.25 km west before making another right turn to travel 1.40 km north to arrive at its destination. what is the magnitude and direction of the truck's displacement from the warehouse?

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n