Which of the following statements about the animal's motion must be true? 1. It is moving to the right between a and c. 2. Its speed is decreasing from a to b and increasing from b to c. 3. Its acceleration is increasing. 4. It is moving to the left between a and b and to the right between b and c.

Bone-strengthening physical activity done increases bone-mineral content and bone density in youth.

Which is not a source of noise pollution? a)airplanes b)acid rain c)machines d)cars

The 10-kg double wheel with radius of gyration of 125mm about o is connected to the spring of stiffness k = 600 n/m by a cord which is wrapped securely around the inner hub. if the wheel is released from rest on the incline with the spring stretched 225 mm, calculate the maximum velocity v of its center o during the ensuing motion. the wheel rolls without slipping