During parkour, a person leaps at a wall and performs a flip. What must they do to change directions?

What is friction? how does it affect the motion of an object?

What accounts for an increase in the temperature of a gas that is kept at constant volume? a. energy has been removed as heat from the gas. b. energy has been added as heat to the gas. c. energy has been removed as work done by the gas. d. energy has been added as work done by the gas.

Awhite-blue star is hotter than a red star. select the best answer from the choices provided true or false