Stacey sees a person pushing a lawn mower across level ground. She is walking at constant speed and pushing the mower with constant force.
Could the lawn mower move faster than the person is walking?

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?

Ways that industry and agriculture use physical properties to separate substances

The space between two 15-in.-long concentric cylinders is filled with glycerin (viscosity = 8.5 × 10-3 lb·s/ft2). the inner cylinder has a radius of 1 in. and the gap width between cylinders is 0.1 in. determine (a) the torque and (b) the power required to rotate the inner cylinder at 180 rev/min. the outer cylinder is fixed. assume the velocity distribution in the gap to be linear.