A boy throws a rock with a velocity of 35.0 m/s. The rock has a mass of 500 g. How much energy, in joules, does the rock have as a result of its motion?

In the following diagram it is given that dec,ab || dc, ad || eb, and ad is congruent to bc. a)why isn't abc a parallelogram even though it has a pair of parallel sides and a pair of congruent sides b)explain why be must be congruent to bc. further explain what type of triangle this makes triangle abc and what it tells you about angle 1 and angle 2c) finally why must angle 3 be congruent to angle 1? further, explain why we know that angle 3 is congruent to angle 2

Two numbers have a sum of -19. one number is x. what expression represents the other number?

5,678.321 what place value is the 1 in