Energy and Momentum: As shown in the figure, a bullet of mass 0.010 kg moving horizontally suddenly strikes a block of wood of mass 1.5 kg that is suspended as a pendulum. The bullet lodges in the wood, and together they swing upward a vertical distance of 0.40 m. The length of the string is 2.0 m. What was the speed of the bullet just before it struck the wooden block?
A. 67 m/s
B. 250 m/s
C. 370 m/s
D. 420 m/s
E. 650 m/s
Answer: D
You might also like to view...
Old stars are poor in heavy elements because there were very few previous generations of stars before the old stars formed
a. True b. False Indicate whether the statement is true or false
Blood flow is directly proportional to _____ and inversely proportional to ____.
The biggest surprise from the New Horizons flyby of Pluto was learning that Pluto _________.
A. has an ice-rich composition B. is too small to be considered a planet C. shows clear evidence of recent or ongoing geological activity D. has a moon named Charon
A scale from which a rock is suspended reads 5 N when the rock is out of water and 3 N when the rock is submerged. The density of the rock is
A) the density of water. B) 1.5 times the density of water. C) 2.5 times the density of water. D) 3.5 times the density of water. E) none of the above