Which of the following elements is an alkali metal?
select one:
a. magnesium
b. sodium
c. calcium
d. mercury

When considering gravity acceleration and the force of acceleration, what must be true? a. the direction of acceleration must be perpendicular to the direction of the force. b. the direction of the force and the direction of acceleration must be the same as each other. c. the direction of the force and the direction of acceleration must be opposite of each other. d. the mass of the body must be the same as the acceleration of the body.

For this car, predict the shape of a graph that shows distance (x) versus time (t). note that time is the independent variable and will be on the bottom axis. need asap

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.