a 1kg object is explodes and breaks up in to three pieces .one piece has a mass of 400g and has velocity of (15i + 10j )m/s. a second pieces has a mass of 250g and has a velocity of ( 25i - 10j )m/s what is the velocity of the third piece?

Which changes of state do the labels represent? a: b: c:

Asap i'm in class rn a 1,000-kg car is traveling 20 m/s on a flat stretch of road. it gets to a hill and coasts uphill until it stops. how high up the hill does the car travel? givens: equation: 1/2mv2initial=mghfinal solve for h. plug & chug, label.

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.