- #1
Jimmy Rose
- 6
- 0
Ok I've been trying to do a problem and I can't seem to get it.
A rocket is launched from the origin with an acceleration of 20m/s^2 at an angle of 30.0 degrees above the horizontal. The launch acceleration lasts for 2.00 seconds at which time the fuel is exhausted. The rocket then falls with an acceleration of 9.80m/s^2 downward.
-Ignoring air resistance.
What is the maximum velocity in the upward direction?
I used: final velocity = initial velocity + acceleration * time
Which putting in the values I got: Vf = 0 + (20(sin30))(2) = 20m/s
I also have another way
Vf = 20(sin30) + (9.8)(2) = 29.6m/s
I don't know which one is right if either
Here are the answers selections: (a) 20.0 (b) 25.0 (c) 30.0 (d) 35.0 (e) 40.0
He might or might have not rounded them.
The next question I can't even begin
What is the maximum height?
I use the equation y = Vi + 1/2at^2 and I don't get the correct answer
Here are the answers selections: (a) 22.3 (b) 27.5 (c) 30.5 (d) 36.7 (e) 40.4
I’m so frustrated I want to bit my head off especially since its multiple choices.
Please in need of Help.
A rocket is launched from the origin with an acceleration of 20m/s^2 at an angle of 30.0 degrees above the horizontal. The launch acceleration lasts for 2.00 seconds at which time the fuel is exhausted. The rocket then falls with an acceleration of 9.80m/s^2 downward.
-Ignoring air resistance.
What is the maximum velocity in the upward direction?
I used: final velocity = initial velocity + acceleration * time
Which putting in the values I got: Vf = 0 + (20(sin30))(2) = 20m/s
I also have another way
Vf = 20(sin30) + (9.8)(2) = 29.6m/s
I don't know which one is right if either
Here are the answers selections: (a) 20.0 (b) 25.0 (c) 30.0 (d) 35.0 (e) 40.0
He might or might have not rounded them.
The next question I can't even begin
What is the maximum height?
I use the equation y = Vi + 1/2at^2 and I don't get the correct answer
Here are the answers selections: (a) 22.3 (b) 27.5 (c) 30.5 (d) 36.7 (e) 40.4
I’m so frustrated I want to bit my head off especially since its multiple choices.
Please in need of Help.