8. The speed of light is 3.0 x 1010 cm/sec. Express this speed in mi/hr. (You have choices with the scientific notation: multiply scientific notation with the conversion rate, or change the scientific notation to the standard number—but count your zeros very carefully.) I need this in step by step, I’d like explanations to understand too if possible

The slope of a velocity time graph over any interval of time gives the during that interval

Two steel balls, each of mass m, are welded to a light rod of length l and negligible mass and are initially at rest on a smooth horizontal surface. a horizontal force of magnitude f is suddenly applied to the rod as shown. determine (a) the instantaneous acceleration a of the mass center g and (b) the corresponding rate at which the angular velocity of the assembly about g is changing with time.

A20 cm long spring is attached to a wall. the spring stretches to a length of 22 cm when you pull on it with a force of 100 n. what is the spring constant