This is a science question but i couldnt find science. which of the following is a scalar quantity? 1. velocity 2. speed 3. force

Anybody wanna ? (picture included? )

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.

An astronaut on the moon throws a baseball upward. the astronaut is 6 ft, 6 in. tall, and the initial velocity of the ball is 3030 ft per sec. the height s of the ball in feet is given by the equation s equals negative 2.7 t squared plus 30 t plus 6.5s=−2.7t2+30t+6.5, where t is the number of seconds after the ball was thrown. complete parts a and b.