# physics

posted by .

A balloon carrying a basket is descending at a constant velocity of 20.0 m/s. A person in the basket throws a stone with an initial velocity of 15.0 m/s horizontally perpendicular to the path of the descending balloon, and 4.00s later this person sees the rock strike the ground.

A. How high was the balloon when the rock was thrown out?
B. How far horizontally does the rock travel before it hits the ground?
C. At the instant the rock hits the ground, how far is it from the basket?

• physics -

A balloon carrying a basket is descending at a constant velocity of 20.0 m/s. A person in the basket throws a stone with an initial velocity of 15.0 m/s horizontally perpendicular to the path of the descending balloon, and 4.00s later this person sees the rock strike the ground.

A. How high was the balloon when the rock was thrown out?

From h = Vot + gt^2, where h = height, Vo = initial downward velocity, g = gravity = 9.8m/s and t = time in seconds, h = 20(4) + 9.8(4^2)/2 = 158.4m.

B. How far horizontally does the rock travel before it hits the ground?

Dh = 4(15) = 60met.

C. At the instant the rock hits the ground, how far is it from the basket?

The balloon descends 80m in 4 seconds being 78.4m from the ground at the rock's impact. Therefore, the distance between the balloon and the rock is sqrt(78.4^2 + 60^2) = 98.72 m.

## Similar Questions

1. ### Physics

a ball is thrown vertically upwards with a velocity 'u' from the balloon descending with a constant velocity 'v'.. the ball will pass by the balloon after what time?
2. ### physics

A 124- balloon carrying a 22- basket is descending with a constant downward velocity of 16.3 A 1.0- stone is thrown from the basket with an initial velocity of 18.7 perpendicular to the path of the descending balloon, as measured relative …
3. ### physics

A 124- balloon carrying a 22- basket is descending with a constant downward velocity of 27.4 A 1.0- stone is thrown from the basket with an initial velocity of 20.0 perpendicular to the path of the descending balloon, as measured relative …
4. ### Physics

In this problem, your task is to analyze a lead balloon. The balloon in question is a hollow sphere of diameter of 20.0 m, constructed from a lead foil 0.25 mm thick and filled with helium gas. Below the balloon, a passenger basket …
5. ### physics

a hot-air balloon having initial velocity vi as it ascends. Then, a water balloon is dropped from the basket when it is 135 meters high and would hit the ground after 9.00 seconds. a) find the velocity of the hot-air balloon upon release …
6. ### Physics

A Balloon carrying a basket is descending at a constant velocity of 20.0 m/s. A person in the basket throws a stone with an initial velocity of 15.0 m/s horizontally perpendicular to the path of descending balloon and 4.00 (s) later …
7. ### College Physics

A Balloon carrying a basket is descending at a constant velocity of 20.0 m/s. A person in the basket throws a stone with an initial velocity of 15.0 m/s horizontally perpendicular to the path of descending balloon and 4.00 (s) later …
8. ### mechanics

A halogen gas failed balloon released frim the ground,travels vertically up with a constant acceleration of 2m/s^2.Three seconds later,a stone is projected vertically up from the ground to hit the ascending balloon.The stone just manages …
9. ### Physics

A 124-kg balloon carrying a 22-kg basket is descending with a constant downward velocity of 25.2 m/s A 1.0-kg stone is thrown from the basket with an initial velocity of 11.7 m/s perpendicular to the path of the descending balloon, …
10. ### Physics

A 124-kg balloon carrying a 22-kg basket is descending with a constant downward velocity of 25.2 m/s A 1.0-kg stone is thrown from the basket with an initial velocity of 11.7 m/s perpendicular to the path of the descending balloon, …

More Similar Questions