A parcel of air moving in a straight tube with a constant acceleration of -3.35

Question

A parcel of air moving in a straight tube with a constant acceleration of -3.35 m/s2 and has a velocity of 15.0 m/s at 10:05:00 a.m.

(a) What is its velocity at 10:05:01 a.m.?
????? m/s

(b) What is its velocity at 10:05:04 a.m.?
????? m/s

(c) What is its velocity at 10:04:59 a.m.?
????? m/s

(d) Describe the shape of a graph of velocity versus time for this parcel of air.

This answer has not been graded yet.

(e) Argue for or against the following statement: "Knowing the single value of an object's constant acceleration is like knowing a whole list of values for its velocity."

Explanation / Answer

a) v = u + at

v = 15 + ( -3.35) * 1 = 11.65 m/s

b) v = 15 + ( -3.35) * 4 = 1.6 m/s

c) v = 15 + ( -3.35) * ( -1) = 18.35 m/s

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