Skip to content
Login Register

Practice question

MCQ

Question

A stone is projected horizontally with a speed of 10 m/s from a height of 20 m. How long does it take to reach the ground? (Take g = 10 m/s²)

Options

Choose one · Correct answer highlighted

Explanation

For vertical motion: y = v₀y t + (1/2) a\_y t², where v₀y = 0, a\_y = -g. As per NCERT Chapter 3, equations v=u+at, s=ut+½at², v²=u²+2as describe uniformly accelerated motion. Applying correct signs and units gives 2 s as the result, so option A is correct.

Related blogs

Guides and insights connected to this topic