Vị trí của một chất điểm chuyển động trong hệ Oxy được xác định bởi vectơ r t j t k   4sin . 2sin .   
. Quỹ đạo của nó là đường

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

Choose a synonym for the underlined homonym (a word with two or more meanings). i did not expect the boat to rock so much. a. boulder c. astound b. sway d. shock

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain