Got this one right 1.E 2.A 3.B 4.D 5.C
The main point is stated in the 1st paragraph: many players are unaware of the existence of a second, lesser-known location on the racket face, the center of percussion,
that will also greatly diminish the strain...
1. What is the primary message the author is trying to convey? --> General Question (find the main point)
(A) a proposal for an improvement to the design of tennis rackets --> You won't find any information about design in the whole passage....
(B) an examination of the differences between the two types of sweet spot --> There are no differences expained in the passage. In the first paragraph 2 Sweet points are stated. Only 2nd point is described in the followinf paragraphs.
(C) a definition of the translational and rotational forces acting on a tennis racket --> That's not the main point (see explanation above)
(D) a description of the ideal area in which to strike every ball --> It's not the only sweet point, so we can't say that the 2nd sweet point must be used to strike each ball
(E) an explanation of a lesser-known area on a tennis racket that dampens unwanted vibration --> CORRECT. Rephrasing of the main point ; All other choices were already eliminated.
2.According to the passage, all of the following are true of the forces acting upon a tennis
racket striking a ball EXCEPT
(A) The only way to eliminate the jolt that accompanies most strokes is to hit the ball
on the center of percussion --> CORRECT. 2nd sweet point is only one of two possible ways to achieve the elimination of the jolt
(B) The impact of the ball striking the racket can strain a tennis players arm --> can be found in paragraph
(C) There are at least
two different forces acting upon the racket. --> can be found in paragraph
(D) The end of the handle of the racket will jerk forward after striking the ball unless --> can be found in paragraph
the ball strikes the rackets center of mass.
(E) The racket will rebound after it strikes the ball --> can be found in paragraph (bounce back...)
This one most diff. for me... B or D ? Picked B at the end....
3.What is the primary function served by paragraph two in the context of the entire passage?
(A) to establish the main idea of the passage --> Main idea is stated in the 1st paragraph
(B) to provide an explanation of the mechanics of the phenomenon discussed in the
passage -> CORRECT. The 2nd paragraph starts with the words "In order to understand the physics of
this second sweet spot ..."
(C) to introduce a counterargument that elucidates the main idea of the passage --> It explains how the 2nd spot works
(D) to provide an example of the primary subject described in the passage --> To be honest, I can not eliminate this one, B sounds better for me....
(E) to explain why the main idea of the passage would be useful for tennis players --> it describes the mechanics... tennis player is not mentioned in the paragraph at all !
4.The author mentions “a penny that has been struck near its edge” in order to
(A) show how the center of mass causes the racket to spin --> The ball causes the racket to spin and not a center of mass
(B) argue that a penny spins in the exact way that a tennis racket spins --> can not be found in the paragpraph
(C) explain how translational motion works --> rotational motion NOT translational
(D) provide an illustration of a concept --> CORRECT. It's used just as illustration....
(E) demonstrate that pennies and tennis rackets do not spin in the same way --> spins like a penny.... ooposite....
5. Which of the following can be inferred from the passage?
(A) If a player holds the tennis racket anywhere other than the end of the handle, the
player will experience a jolting sensation. -->can not be found in the paragpraph .. to extreme..
(B) The primary sweet spot is more effective at damping vibration than the secondary
sweet spot --> no comparison can be found
(C) Striking a tennis ball at a spot other than the center of percussion can
result in a
jarring feeling --> CORRECT. ...strain on a player's arm.
(D) Striking a tennis ball repeatedly at spots other than a sweet spot leads to “tennis
.” --> can not be found in the paragpraph
(E) If a player lets go of the racket at the moment of impact, the simultaneous forward
and backward impetus causes the racket to drop
straight to the ground --> can not be found in the paragpraph
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