How do you put 1/2000 into scientific notation? * A. 5.0 x 10^4
B.2.0 x 10^4
C. 5.0 x 10^-4
D. 2.0 x 10^-4

Try using photo math it’s a good app for math homework help

Kinetic energy = 1/2mv^2. since the mass is constant we can form a ratio of it's kinetic energy at 60 divided by that at 30 to see ke(60)/ke(30) = +(60^2)/30^2). this may be said to 300% increase.

No because a circle or pie graph usually shows percentages you'd need a line graph