A cat walks in a straight line, which we shall call the x-axis with the positive direction to the right. As an observant physicist, you make measurements of this cat's motion and con- struct a graph of the feline's velocity as a function of time (Fig. E2.30). (a) Find the cat's velocity at t = 4.0 s and at = 7.0 s. (b) What is the cat's acceleration at t = 3.0 s? At = 6.0 s? Att = 7.0 s? (c) What distance does the cat move dur- ing the first 4.5 s? From t = 0 tot = 7.5 s? (d) Sketch clear graphs of the cat's acceleration and position as functions of time, assuming that the cat started at the origin.
A cat walks in a straight line, which we shall call the x-axis with the positive direction to the right. As an observant physicist, you make measurements of this cat's motion and con- struct a graph of the feline's velocity as a function of time (Fig. E2.30). (a) Find the cat's velocity at t = 4.0 s and at = 7.0 s. (b) What is the cat's acceleration at t = 3.0 s? At = 6.0 s? Att = 7.0 s? (c) What distance does the cat move dur- ing the first 4.5 s? From t = 0 tot = 7.5 s? (d) Sketch clear graphs of the cat's acceleration and position as functions of time, assuming that the cat started at the origin.
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Transcribed Image Text:A cat walks in a straight line, which we shall call the
x-axis with the positive direction to the right. As an observant
physicist, you make measurements of this cat's motion and con-
struct a graph of the feline's velocity as a function of time
(Fig. E2.30). (a) Find the cat's velocity at t = 4.0 s and at
t = 7.0 s. (b) What is the cat's acceleration at t = 3.0 s? At
t = 6.0 s? At t = 7.0 s? (c) What distance does the cat move dur-
ing the first 4.5 s? From t = 0 tot = 7.5 s? (d) Sketch clear graphs
of the cat's acceleration and position as functions of time, assuming
that the cat started at the origin.
Figure E2.30
U₂
(cm/s)
87
8
7
6
5
4
3
2
-
O
TT
-T
1
2
3
4
15
6
7
t (s)
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