Question

For a particle moving in a straight line having initial velocity 45 regarding uniformally with 10 m per sec.find velocity at t=3 sec And S in t=3 sec

Answer 1

Answer:Correct option is

A

1 m

Given,

u=10m/s

a=−2m/s  

2

 

n=5

The distance covered by the particle in n  

th

 second is

S  

n

​

=u+  

2

a

​

(2n−1)

S  

5

​

=10−  

2

2

​

(2×5−1)

S  

5

​

=10−9=1m

The correct option is A.

Explanation: