Question

Sam does an experiment to find how long it takes an apple to drop $2$ meters. Sam measures $0.62$ seconds, which is an approximate value. Calculate the error percentage.

• A. $4\%$
• B. $3\%$
• C. $6\%$
• D. None of the above

Answer 1

The correct option is B $3\%$

we know that ,
$s=\frac{a{t}^2}{2}$
$a=g=9.81mse{c}^{-2}$
$2=\frac{9.81t^2}{2}$
$t=\sqrt{\frac{4}{9.81}}$
$t=0.6385$
Therefore, error is $(0.6385-0.62)\times 100$
$3$ is the error percentage.