A pendulum consists of a 2.0-kg block hanging on a 1.5-m length ...

[NClaborn]

A pendulum consists of a 2.0-kg block hanging on a 1.5-m length string. A 10-g bullet moving with a horizontal velocity of 900 m/s strikes, passes through, and emerges from the block (initially at rest) with a horizontal velocity of 300 m/s. To what maximum height above its initial position will the block swing?
 a. 32 cm
  b. 38 cm
  c. 46 cm
  d. 27 cm
  e. 9 cm

Question 2

A 10-g bullet moving horizontally with a speed of 1.8 km/s strikes and passes through a 5.0-kg block initially at rest on a horizontal frictionless surface. The bullet emerges from the block with a speed of 1.0 km/s. What is the kinetic energy of the block immediately after the bullet emerges?
 a. 8.0 J
  b. 6.4 J
  c. 5.3 J
  d. 9.4 J
  e. 10 J

[cegalasso]

Answer to Question 1

C

Answer to Question 2

B