Question

At $t=0$, an arrow is fired vertically upwards with a speed of $100m/s$. A second arrow is fired vertically upwards with the same speed at $t=5s$. Then

• A. The two arrows will be at the same height above the ground at $t=12.5s$.
• B. The two arrows will reach back their starting points at $t=20s$and at $t=25s$.
• C. The ratio of the speeds of the first and second arrows at $t=20s$will be $2:1$.
• D. The maximum height attained by either arrow will be $1000m$.

Answer 1

Answer: (A), (B)

The correct options are
A The two arrows will be at the same height above the ground at $t=12.5s$.
B The two arrows will reach back their starting points at $t=20s$and at $t=25s$.