Question

A body is thrown vertically upward in air when air resistance is taken into account, the time of ascent is $t_1$, and time of descent is $t_2$, then which of the following is true?

• A. $t_1 = t_2$
• B. $t_1 < t_2$
• C. $t_1 > t_2$
• D. $ t_{1}\,_{<}^{>}\,t_{2} $

Answer 1

Answer: (B)

When a body is thrown up, its velocity goes on decreasing. Air resistance is smaller. When a body falls down, its velocity goes on increasing. Air resistance is larger $ t_{2} $ increases.