A 60kg bucyclist going 2 m/s increased his output by 1800 j .what was his final velocity

What is i fracture in the crust called when land move up, down or sideways

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

May someone me with these science questions