If the velocity 'u' of a body moving along a straight line with a constant retardation 'a' is reduced by
75% in time t', then t-
options in the ppic sorry physics
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If the velocity 'u' of a body moving along a straight line with a constant retardation 'a' is reduced by
75% in time t', then t-
options in the ppic sorry physics
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Answer:-
Your Answer Is Option b)
Explanation:-
Given:-
To Find:-
Equation Used:-
Where,
So Here,
Solution:-
As in the que. it is given that the initial velocity "u" ir reduced by 75% by acceleration "-a" in time "t".
So Let the Final Velocity be v.
By Using Equation we get:-
So From eq(1) and eq(2) we get:-
The Final Answer Is Option b.
Aɴsᴡᴇʀ :
• Time (t) =
Gɪᴠᴇɴ :
• Initial velocity = u
• Acceleration = -a (retardation)
• Time = t
• Final velocity (v) = u - 75% of u
Tᴏ Fɪɴᴅ :
• Time in terms of u and a.
Fᴏʀᴍᴜʟᴀ Usᴇᴅ :
•
Sᴏʟᴜᴛɪᴏɴ :
➪
➪
➪
➪ --(i)
By substituting (i) in formula, we get
➪
➪
Here ‘a’ is retardation (-a), so
➪
➪
➪
★ Hence, option b is correct ✔