A basketball dropped from the roof of a 47 meter building. How long would an object take to free-fall of the top of the building? [Neglect friction)
a,4.8s
b,2.1s
C, 9.6 s
D,3.1s

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

The pressure proportional to the area a- inversely b- directly c- increase d-decrease

Which bonds are found inside a water molecule