Which scenario best describes motion? a toy train in position 4 on a number line a race track that is 100 meters long a ball rolling from point a to point b a student living 150 miles from chicago

Can somebody explain to me how newton's 3rd law relates to momentum? ~ap physics 1

Two point charges are on the y axis. a 3.90-µc charge is located at y = 1.25 cm, and a -2.4-µc charge is located at y = −1.80 cm. (a) find the total electric potential at the origin. v (b) find the total electric potential at the point whose coordinates are (1.50 cm, 0). v

Two forces produce equal torques on a door about the door hinge. the first force is applied at the midpoint of the door; the second force is applied at the doorknob. both forces are applied perpendicular to the door. which force has a greater magnitude?