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March 29, 2015

March 29, 2015

Posted by **roger** on Thursday, August 30, 2012 at 12:29am.

(a) If its initial velocity is 5.2 m/s, what is its displacement during the time interval?

m

(b) What is the distance it travels during this interval?

m

(c) If its initial velocity is

−5.2

m/s, what is its displacement during the time interval?

m

(d) What is the total distance it travels during the interval in part (c)?

m

- physics -
**Elena**, Thursday, August 30, 2012 at 5:08amAssume that positive x-axis directed to the right

(a)(b) v=vₒ+at

t=( v-vₒ)/a=(10.4-5.2)/3.65=1.42 s

displacement = distance= vₒt+at²/2=5.2•1.42+3.65•1.42²/2=

7.384+3.68 =11.064 m

(from origin point - to theright)

(c) v=-vₒ+at

t1=(0+vₒ)/a=5.2/3.65=1.42 s.

s1 =vₒ²/2a=5.2²/2•3.65=3.7 m (to the left)

v=a•t2

t2=v/a=10.4/3.65=2.89 s.

s2= at²/2=3.65•2.89²/2=15.23 m (to the right)

Distance=3.7 +15.23=18.93 m

Displacement =15.23-3.7=11.53 m

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