9th Class
Science
Gravitation and Floatation
Question Bank
Gravitation Summative Subjective Problems
question_answer
A stone is thrown vertically upwards with an initial velocity of \[\text{30 m}{{\text{s}}^{-1}}.\] What is the time taken for the stone to reach its maximum height?
Answer:
Time of ascent\[(t)=\frac{u}{g}=t\frac{3}{9.8}s=3.06\,s\]