1point
two people are paddling a canoe downstream with a speed of 4 km/h relative
to the river. if the river is flowing at 17 km/h, how long will it take them to
reach the canoe dock 25km away?
o a. 1.5 h
o b. 1.9 h
o c. 1.26
o d. 0.8 h

Adiver in midair has an angular velocity of 6.0 rad/s and a moment of inertia of 1.2 kg·m2. he then pulls is arms and legs into a tuck position and his angular velocity increases to 12 rad/s. the net external torque acting on the diver is zero. what is his moment of inertia in the tuck position?

Adding more pulleys to a system of pulleys needed to lift an object. a. increases the force b. decreases the force c. increases the amount of work d. decreases the amount of work

Acup of coffee sits on the dashboard of an automobile. the car goes around a sharp curve. even though you hold the cup still, coffee still splashes out. this can best be explained due to a) density. b) friction. c) gravity. d) inertia.