A) 15 m/s
B) 17 m/s
C) 19 m/s
D) 21 m/s
Correct Answer: B
Solution :
[b] Given, m = 500 kg, u = 5 m/s and t = 20 s |
Resultant force, F = 500 - 200 = 300 N |
\[\therefore \]Acceleration, \[a\frac{F}{m}=\frac{300}{500}=0.6\ \operatorname{m}/{{s}^{2}}\] |
By equation of motion, |
v = u + at = 5 + 0.6 \[\times \] 20 =17 m/s |
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