Newton's 1st law of motion states that a moving object will go in a straight line unless an outside force changes this motion. what outside force prevents the planets from moving in a straight line into space?
gravity
meteorite impacts
supernovas
nuclear fusion

If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c

Often called simply "velocity," this is the velocity of an object at a particular moment in time.

Place several e-field sensors at a few points on different equipotential lines, and look at the relationship between the electric field and the equipotential lines. which statement is true? 1-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of higher voltages. 2-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of lower voltages. 3-at any point, the electric field is parallel to the equipotential line at that point.