A) -3 N
B) -30 N
C) 3 N
D) 30 N
Correct Answer: B
Solution :
From the first equation of motion \[v=u+at\] Given \[u=10\text{ }m\text{/}s,\] \[v=-2\text{ }m\text{/}s,\] \[t=4\text{ }s\] \[a=\frac{-2-10}{4}=-\,3m\text{/}{{s}^{2}}\] So, force acting on the object \[F=ma=10\times (-3)=-\,30N\]You need to login to perform this action.
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