Which statement includes a description of velocity? (1 point) O A car travels east at 45 kilometers per hour. O A student walks 20 meters down the street. O A bicycle moves 8 meters per second. 0 A marble rolls 30 centimeters away from the table.

Picture a all traveling at a constant speed around the inside of a circular structure. is the ball accelerating? explain your answer

James is trying to prove newton's 2nd law of motion. he tries to move four different objects with different masses, shapes, and sizes from point a to point b. the objects are a toy car, a car, a refrigerator, and a kitchen table. after some experimentation, he finds that force is dependent on the mass of the object, rather than it's size or shape. the object that takes the most force to move is the

The uniform slender bar rests on a smooth horizon- tal surface when a force f is applied normal to the bar at point a. point a is observed to have an initial acceleration aa of 20 m/s2, and the bar has a corre- sponding angular acceleration of 18 rad /s2. deter- mine the distance b.