21 May WHAT HAPPENS TO THE ASTRONAUT’S WEIGHT?
An astronaut triples their distance from the center of the earth. What happens to the astronaut’s mass?
A)It decreases by a factor of 3
B)It increases by a factor of 3
C) It does not change
D) It decreases by a factor of 9
E) It increases by a factor of 9
2. An astronaut triples their distance from the center of the earth. What happens to the astronaut’s weight?
A) It does not change
B)It decreases by a factor of 3
C)It increases by a factor of 9
D)It decreases by a factor of 9
E)It increases by a factor of 3
3. Why did Newton’s contemporaries have a difficult time accepting his law of gravity?
A)the distances to the planets were unknown
B)they couldn’t comprehend the idea of an action at a distance
C)Space-flight had not been accomplished
D)they thought Newton stole his work
E)the masses of the planets were unknown
4.A book sits on a table. What is the reaction force to its weight?
A) the force the book exerts on the earth
B)the force the book exerts on the table
C)the force the earth exerts on the book
D)the normal force of the table on the book
E) the force the table exerts on the earth
Explain your answers
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