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1837_15880_p6.JPG

Grade:12

2 Answers

PIYUSH AGRAWAL
31 Points
10 years ago

a. x=mt2+c

v=dx/dt=2mt

a=dv/dt=2m=const.

so, 1,4 are correct.

 

b. x=mt+c

v=dx/dt=m=const.

a=dv/dt=o

so, 3,5 are correct.

 

c. v2=mx+c

or, v=(mx+c)1/2

a=dv/dt={m(mx+c)-1/2/2}(dx/dt)={m(mx+c)-1/2/2}v=m/2=constant.

so, 1,4 are correct.

 

d. v=mx+c

a=dv/dt=mdx/dt=mv=m(mx+c)

so, 2,4 are correct.

 

to understand the above method, you must have knowledge of deifferntiation and straight line eqn.

 

for more, you may ask---

piyush agrawal

class 12 student

gOlU g3n|[0]uS
42 Points
10 years ago

answer is     1       A,C

                  2        D

                  3        B

                  4        A,C

                  5        B                                     if iam wrong then tell me ans

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