Question

two cars A and B travelling towards season straight line with speed 20 metre per second and 10 metre per second respectively when they are 400 metre apart and comes to rest . the ratio of their magnitude is​

Answer 1

Answer:

Distance between the two cars is 150 m.

For Car−1:

v=u

1

−at

0=10–2t

t = 5 sec

so distance travelled will be

s

1

=u

1

t−

2

1

at

2

s

1

=10×5−

2

1

×2×5

2

s

1

=25m

For Car−2:

v=u

2

−at

0=12–2t

t=6sec

so distance travelled will be

s

2

=u

2

t−

2

1

at

2

s

2

=12×6−

2

1

×2×6

2

s

2

=36m

So, when both cars will stop then the distance between them, will be :

150m–(25+36)m

=89m