a ball with a mass of 2 kg hangs in a 1.20 m long wire from the ceiling. The bullet is hit by a projectile with a mass o

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a ball with a mass of 2 kg hangs in a 1.20 m long wire from the
ceiling. The bullet is hit by a projectile with a mass of 0.025 kg
and an unknown horizontal speed v0. the projectile hits the bullet
in a central shock. The projectile becomes stuck in the ball and
the ball oscillates out to the side so that the string forms an
angle of 35 dgrees with the vertical line.
a) draw a figure and explain which conservation laws apply.
b) calculate the velocity of the projectile v0