A) 5625 N
B) 6625 N
C) 7025 N
D) 7625 N
Correct Answer: A
Solution :
| [a] As, according to Newton's second law, |
| \[\ F=ma=900\times \left( -\frac{30}{4.8} \right)=-5625\operatorname{N}\] |
| Negative sign shows that the direction of force is opposite to motion of the body. |
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