Question

A body is thrown vertically upward with a velocity of 20 m/s. What is the maximum height reached by the body? (Take $ g = 10 \, \text{m/s}^2 $)

• A. 20 m
• B. 30 m
• C. 40 m
• D. 50 m

Hint:

Use $ v^2 = u^2 - 2gh $ for vertical motion under gravity. Maximum height occurs when velocity becomes zero.

Answer 1

The Correct Option is A

At maximum height, final velocity $ v = 0 $.
Use kinematic equation: $$ v^2 = u^2 - 2gh \Rightarrow 0 = u^2 - 2gh $$
Solving for $ h $: $$ h = \frac{u^2}{2g} = \frac{(20)^2}{2 \cdot 10} = \frac{400}{20} = 20 \, \text{m} $$