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