1.

the the velocity of particle at any instant is 10 M per second after 5 second the velocity of particle is 20 m per second the velocity at 3 second before is

Answer»

Hii..
Here is your ANSWER..

Solution:-
Initial velocity(u)=10m/s
Final velocity(v)=20m/s
Time =5 sec

Now,
We'll FIND Acceleration then will find the answer by using EQUATION:-
=  > v = u + at \\  =  > 20 = 10 + a5 \\  =  > 2 0 - 10 = a5 \\  =  > 10 = a5
=  > a =  \frac{10}{5}   \\ =  > a = 2
Now,
Velocity before 3 SECOND=
=  > 3 \times 2 \\  =  > 6m \: per \: sec
=>6m/s

Hope it helps uh....✌️✌️✌️



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