Which of the following is a scalar quantity? a. 90 km/hr north b. 20 m/s at an angle of 25 c. 30 pounds d. 15 n down

Ten students stand in a circle and are told to make a transverse wave. what best describes the motion of the students? each student bumps the shoulder of his or her neighbor. at the exact time, all students take a step to the right. the students skip clockwise, going in a circular motion. one at a time, each student lifts his or her hands up and then down.

In a load, the load is paralel to the shaft. n a. angular n b. thrust n c radial n d. none of the above

Ahot-air balloonist, rising vertically with a constant speed of 5.00 m/s releases a sandbag at the instant the balloon is 40.0 m above the ground. after it is released, the sandbag encounters no appreciable air drag. compute the velocity of the sandbag at 0.250 s after its release.