Question

The displacement time relation of body is given by linear equation as s/5+t/10=1 where s, t are in m and s. the velocity of the body is​

Answer 1

Answer:

S=15t−0.4t

2

dt

ds

=15−0.8t

ϑ=

dt

ds

so,

ϑ=15−0.8t

Given, ϑ=7

7=15−0.8t

t=10 sec

Hope it helps you ...

Answer 2

Step-by-step explanation:

Correct option is

B

t=10s

S=15t−0.4t

2

dt

ds

=15−0.8t

ϑ=

dt

ds

so,

ϑ=15−0.8t

Given, ϑ=7

7=15−0.8t

t=10 sec