Question

3. After a bullet of mass 0.055 kg is fired into aballistic pendulum of mass 4 kg. the bullet is embeddedin the pendulum and the pendulum rose to a height of 0.01 m.Calulate the speed of the pendulum just after the collision. (1 point)0.443 m/sA.B. O 0.125 m/sC. O 0.713 m/s4D. O 0.794 m/sE. 0.344 m/s4. After a bullet of mass 0.03 kg is fired into aballistic pendulum of mass / kg, the bullet is embeddedin the pendulum and the pendulum rose to a height of 0.4 m.Calulate the speed with which the bullet was fired into the

Answer 1

2)

The formula for calculating the momentum of an object is expressed as

momentum = mv

where

m is the mass of the object

v is the velocity

From the information given,

momentum = 40

m = 20

Thus,

40 = 20v

v = 40/20 = 2

The formula for calculating the kinetic energy of an object is expressed as

kinetic energy = 1/2mv^2

kinetic energy = 1/2 x 20 x 2^2

Kinetic energy = 40 J