Question
A railroad gun of mass M = 3.0 kg fires a shell of mass m=1.0 kg at an angle of θ= 45.0 ∘ with respect to the horizontal as measured relative to the gun. After the firing is complete, the final speed of the projectile relative to the gun (muzzle velocity) is v0=120.0 m/s . The gun recoils with speed vr and the instant the projectile leaves the gun, it makes an angle ϕ with respect to the ground.
What is vp, the speed of the projectile with respect to the ground (in m/s)?
What is ϕ, the angle that the projectile makes with the horizontal with respect to the ground (in degrees)?
What is vp, the speed of the projectile with respect to the ground (in m/s)?
What is ϕ, the angle that the projectile makes with the horizontal with respect to the ground (in degrees)?