A bullet of mass 2.6 g strikes a ballistic pendulum of mass 3.6 kg. The center of mass of the pendulum rises a vertical distance of 13 cm. Assuming that the bullet remains embedded in the pendulum, calculate the bullet's initial speed.

2211.4 m/s

Explanation:

We are given that

Mass of bullet,m=2.6 g=

1 kg=

Mass of pendulum,M=3.6 kg

Vertical distance,y=13 cm=

1 m=100 cm

We have to find the bullet's initial speed.

Kinetic energy of bullet=P.E

Where

According to law of conservation of momentum

Hence, the bullet's initial speed=2211.4 m/s

because growing process had stoped after 4-5 year

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.