Question

1 A can increase its speed from 20 km/h to So kamin 10 Seconds, find its acceleration​

Answer 1

Answer:

Given u=20km/hr=  

9

50

​

m/s , v=3km/hr=  

9

75

​

m/s

Using v=u+at      ⇒  

9

75

​

=  

9

25

​

+a×10

⇒a=  

18

5

​

=0.2778 m/s  

2

Explanation:

Answer 2

Answer:

u=20km/h

u=50/9m/s

v=50km/h

v=125/9m/s

t=10sec(given)

v=u+at

125/9-50/9=10a

7.5/9=a

hence this is your amswer