The velocity v (in m/s) of a body moving in a
straight line depends on time t (in s) as v = 2.
The magnitude of total change in velocity of the
body from t = 0 to t = 3 s is
(1) 9 m/s
(2) 6 m/s
(4) 18 m/s
(3) 27 m/s
Answers
Answered by
0
Answer:
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Answered by
1
Answer:
Hi
Explanation:
Correct option is
D
Both (A) and (B)
It is given that
a=
dt
dv
=
dt
d
(2t
2
e
−t
)
=2[t
2
e
−1
(−1)+e
−1
2t]
=e
−1
(4t−2t
2
)
So, a=0
⟹ 4t−2t
2
=0
Or 2t(2−t)=0
⟹ t=0 and t=2
I hope it helps you ☺☺
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