A 2-kg pop gun hangs horizontally from a pair of strings in order that recoil can be measured. The pop gun fires a 0.01-kg pellet at a speed of 200 m/s. The recoil velocity of the pop gun is about
A. 0.1 m/s.
B. 0.01 m/s.
C. 0.001 m/s.
D. 1 m/s.
Answer: D
You might also like to view...
What are loose piles of rocks at the base of a steep slope or cliff called?
a. cinder cones b. talus c. breccia d. debris flow e. regolith
It is commonly thought that a can of beverage will cool faster in the coldest part of a refrigerator. Knowledge of Newton's Law of Cooling
A) supports this common knowledge. B) shows this common knowledge is false.
What of the following is a major impact related to sea level rise?
A) Shorelines eroding in coastal areas B) Fish migrating earlier than usual C) Deforestation occurring as salt in the atmosphere increases D) Land vanishing near lakes and rivers
What area has the highest biodiversity?
A. mid-latitude wetlands B. broadleaf deciduous forests C. tropical rain forests