Physics

In classical physics the force F acting on a body is assumed to be the product of mass m and acceleration a.If m=2.31 kg and acceleration is $$3.123 m/s^2$$,then taking into account significant figures the force F should be reported as


ANSWER

7.21 N


SOLUTION
$$F=m \times a$$
$$=2.31 \times 3.123=7.21413 N$$
Rounding off two decimal places since one of the products has two decimal places only.
$$F=7.21 N$$
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