Question

A woman weighing $63$kg eats plum cake whose energy content is $9800$ calories. If all this energy could be utilized by her, she can ascend a height of

• A. $1m$
• B. $66m$
• C. $100m$
• D. $42m$

Answer 1

The correct option is B $66m$

$mgh=9800\times 4.18$

$63\times 9.8\times h=9800\times 4.18$

$h=66.34m$