A) \[2.5\text{ }km/{{s}^{2}}\]
B) \[12.5\text{ }km/{{s}^{2}}\]
C) \[22.5\text{ }km/{{s}^{2}}\]
D) \[32.5\text{ }km/{{s}^{2}}\]
Correct Answer: A
Solution :
Change in velocity\[=\sqrt{{{(40)}^{2}}+{{(30)}^{2}}}\] \[=50\text{ }km/s\] Average acceleration\[=\frac{50}{20}\] \[=2.5\text{ }km/{{s}^{2}}\]You need to login to perform this action.
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