Aprojectile of mass 0.913 kg is shot straight up with an initial speed of 16.3 m/s. (a) how high would it go if there were no air resistance? (b) if the projectile rises to a maximum height of only 7.66 m, determine the magnitude of the average force due to air resistance.

Which of the following changes to a pipe would increase the conductance by a factor of 12? 1.quadrupling the length and tripling the radius.2.reducing the length by a factor of and doubling the radius.3.tripling the length and reducing the radius by a factor of .4.reducing the length but a factor of and doubling the radius.

The force needed to overcome static friction is usually less than that needed to overcome kinetic friction.true or false?

What equation is used to calculate the weight of an object on a plant ?