I kick a rock off the side of a bridge and listen it takes 2.4 seconds before it hits the ground how high is the bridge? A. 56m
B. 28m
C. 12m
D. 3m

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

What is the measure of how much matter is in an object and that can be measured using a balance? a. height b. volume c. weight d. mass

Amother used 150 watts of power to raise a 15 newton object in a time interval of 8.0 seconds. through what vertical distance was the object raised ?