A system of inertia 0.39 kg consists of a spring gun attached to a cart. The system is at rest on a horizontal low-friction track. A 0.050-kg projectile is loaded into the gun, then launched at an angle of 40∘ with respect to the horizontal plane.

Question

With what speed does the cart recoil if the projectile rises 2.3 m at its maximum height?

Answer 1

DO YOUR HOMEWORK!!

Answer 2

0.579 m/s

Answer 3

1.2 m/s. Don't know how but that what it says. Marvin, provide an answer or be quiet.

Answer 4

OMG YOU KNOW MARVIN?? AT THE U???