MERCER COUNTY COMMUNITYCOLLEGE West Windsor, NJ Name: Lec QUIZ 1 Date: Sep 21, 2
ID: 1656857 • Letter: M
Question
MERCER COUNTY COMMUNITYCOLLEGE West Windsor, NJ Name: Lec QUIZ 1 Date: Sep 21, 2017 Must show detail calculation for getting full credit (10 pt) Q.1Q.1 Use rules for addition to add 3.10, 21.1, and 11.111 35-331 Q. 2 Fill the blanks and True/False (30 points) a. In the coordinate system, a fixed reference point is called the b. (Use calculator) tan 1 0.577420:002 c. Any motion involves three concepts i.e. displacement, and d. Displacement can never be negative. True or False? e. Distance is a vector quantity. True or False? f. A car is going at constant velocity then its acceleration equals We discussed four equations of motion. They are only applicable for obj moving with g. acceleration.Explanation / Answer
a] In a co-ordinate system, a fixed reference point is called as the ORIGIN.
b] tan-10.5774 = 30.002o
c] Any motion involves three concepts which are displacement, velocity and acceleration.
d] Displacement can be negative [true]. Distance, however, cannot be negative.
e] Distance is not a vector quantity. It is a scalar quantity [hence answer is false].
f] For constant velocity, the acceleration is zero.
g] The equation of motions as put forward by Newton are applicable for objects moving with constant acceleration.
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