Regarding the relation between acceleration, force, and mass, an object's acceleration is
A) inversely proportional to the force on it and proportional to the object's mass.
B) proportional to the inverse of the height of the Empire State Building.
C) proportional to the force on it and inversely proportional to the object's mass.
D) proportional to the force on it and proportional to the object's mass.
E) inversely proportional to the force on it and inversely proportional to the object's mass.
C
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a. True b. False Indicate whether the statement is true or false
Acceleration: An airplane increases its speed at the average rate of 15 m/s2. How much time does it take to increase its speed from 100 m/s to 160 m/s?
A. 17 s B. 0.058 s C. 4.0 s D. 0.25 s
A pion is an unstable particle that has an average lifetime of 2.55 × 10-8 s
This is the time interval between its creation in a nuclear process and its extinction into decay products, as measured in a frame of reference at rest with respect to the pion. An "average" pion is traveling at 0.230c relative to Earth. How far does it travel in its lifetime, relative to Earth? A) 2.07 m B) 1.81 m C) 2.23 m D) 3.22 m E) 3.50 m
According to calculations made by modern astronomers, the age of the universe is close to
A) 14 billion years. B) 7 billion years. C) 21 billion years. D) 6000 years.