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January 31, 2015

January 31, 2015

Posted by **parul** on Monday, May 28, 2012 at 2:35am.

a)acceleration and retardation produced

b)distance moved by the body with uniform velocity

c)different distances moved by the body with non-uniform velocity i.e.when acceleration was active

d)average velocity in whole journey

- physics -
**Elena**, Monday, May 28, 2012 at 8:50ams1=v1•t1 =2•5 =10 m.

v2=v1+a1•t2 .

a1 =(v2-v1)/t2 =( 10-5)/5 = 1m/s².

s2 = v1•t2 + a1•t2²/2 =5•5+1•25/2 =37.5 m.

0 =v2+a2•t3,

a2 =(0-v2)/t3 = -10/10 =-1 m/s².

s3 = v2•t3 – a2•t3²/2 =10•10-1•100/2 =50 m

v(ave_ =s/t =(s1+s2+s3)/(t1+t2+t3) =

(10+37.5+50)/(5+5+10) = 97.5/20 =4.875 m/s

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