To keep cars safe...............
The answer to question one is A.
The answer to question two is A.
The answer to question three is D.
Answer:
air friction
Explanation:
this helps with take of and landing.
Answer: Work done by the box will be 8 Joules.
Explanation:
Work done by a substance is the product of the force applied on it and the displacement of a substance.
Mathematically,

Where,
W = work done = ? J
F = Force applied = 4 N
s = displacement = 2 m
Putting values in above equation, we get:

Hence, work done by the box will be 8 Joules.
The seismographs are located in Minneapolis, Detroit, and Charleston.