Explain how the mass of your race car will affect its performance in reference to Newtons 2nd law of motion. Use the terms force, mass, and acceleration. I need help ASAP!!

Abeam of electrons with of wavelength of 7.5 x 10-6 m is incident on a pair of narrow rectangular slits separated by 0.75 mm. the resulting interference pattern is projected onto a screen 10.0 m from the slits. what is the separation of the interference maxima in the resulting interference pattern?

Amodel rocket with a mass of 0.212 kg is launched into the air with an initial speed of 84 m/s. how much kinetic energy will the rocket have at a height of 214 m? assume there is no wind resistance. 634 j 303 j

Explain earth's motion, using the terms "precession" and "rotation" in your answer.