Question

(2) 5S, = 3S=S
(3) S, =S2 ==S,
(4) S, =S2 = 35
5
(1) S = S, =S,
Example: 17
A body starts from rest What is the ratio of the distance travelled by the body during the 4th and 3rd
B, starts from
s
second.
(1) 715
18
(2) 5/7
(3) 713
(4) 3/7
time
meet after a ti​

Answer 1

Explanation:

From the question a graph is drawn above,

Area of v−t graph⟹ distance travelled

v

avg

=

t

1

+t

2

+t

3

8s

2

1

v

m

×t

1

=s

t

1

=

v

m

2s

t

2

×v

m

=2s

t

2

=

v

m

2s

2

1

×t

3

×v

m

=5s

t

3

=

v

m

10s

v

avg

=

v

m

2s

+

v

m

2s

+

v

m

10s

8s

v

m

v

avg

=

7

4

solution