The initial speed of a cannon ball is 0.20 km/s. If the ball is to strike a target that is at a horizontal distance of 3.0 km from the cannon, what is the minimum time of flight for the ball?
1) 16 s
2) 21 s
3) 24 s
4) 14 s
5) 19 s
Answer: 1
The initial speed of a cannon ball is 0.20 km/s. If the ball is to strike a target that is at a horizontal distance of 3.0 km from the cannon, what is the minimum time of flight for the ball?
1) 16 s
2) 21 s
3) 24 s
4) 14 s
5) 19 s
Answer: 1