A bullet with a mass of 10. g is fired from a rifle with a barrel that is 85 cm long.   a.     Assuming that the force exerted by the expanding gas to be a constant 5500 N, what speed would the bullet reach?

Which are examples of projectile motion? choose all that apply a. a soccer ball rolling across the ground in the northeast direction b. a car turning a corner, so it is heading south c. a javelin flying through the air d. a tennis ball lobbed over the net

1. how to locate the image in converging(concave) mirror and diverging (convex) mirror with salt. 2. how to locate the image in a converging (convex) lens and diverging (concave) lens with salt.

Why does lightning travel from clouds to the ground?