A 40 N force is applied to a 10 kg block, but the object only accelerates at 2 m/s^2. What is the net force acting on the block? Use a free body diagram to explain your answer.

cant without the picture! ?

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.

no. bullets are macro objects. wave nature is for light waves, extremely tiny particles. if a light particle was the size of your finger, the bullet would be the size of the universe. so basically, that huge difference in size makes the wave nature of matter insignificant.