A 5.00-g bullet is fired into a 950-g block of wood suspended as ...

[Marty]

A 5.00-g bullet is fired into a 950-g block of wood suspended as a ballistic pendulum. The combined mass swings up to a height of 8.00 cm. What was the kinetic energy of the bullet immediately before the collision?
 a. 1.4E+2 J
  b. 1.5E+3 kJ
  c. 3.9E3 J
  d. 1.4E+8 J
  e. 1.5E+2 J

Question 2

A 13.4-g bullet is fired into a 1.60-kg block of wood which is suspended as a ballistic pendulum. The combined mass swings up to a height of 8.50 cm. What was the kinetic energy of the combined mass immediately after the collision?
 a. 1.32 J
  b. 1.33 J
  c. 0.0112 J
  d. 1.34 J
  e. 0.137 J

[jordangronback]

Answer to Question 1

a

Answer to Question 2

d

[Marty]

Thanks for the timely response, appreciate it

[diana chang]

Wow, this really help