Time Projectile Problem Solved - Thanks!

In summary, the projectile will travel a total of 12 meters in the time it took me to calculate the final speed.
  • #1
MrRandom66
38
0
Problem solved, many thanks
 
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  • #2
Write down some equations that may be used. The we can discuss which of them can apply.
 
  • #3
You might want to check your units.
 
  • #4
I'm really not sure what equations to use. I have a list of some equations but they ask for the initial velocity.
 
  • #5
You can find the initial speed in the vertical direction.
 
  • #6
grzz said:
You can find the initial speed in the vertical direction.

Could you explain that please?
 
  • #7
Try to find what is known in the vertical direction.
 
  • #8
grzz said:
Try to find what is known in the vertical direction.

Vertical displacement is 15m, and Gravity due to acceleration is 9.8 m s^2
 
  • #9
initial speed
final speed
distance travelled
acceleration
time
Which of the above are known in the vertical direction?
 
  • #10
What is the speed in the vertical at the maximum height?
 
  • #11
Distance Travelled, and Acceleration?

Feel like I'm missing something here...
 
  • #12
MrRandom66 said:
Vertical displacement is 15m, and Gravity due to acceleration is 9.8 m s^2
Correct but acceleration is negative if we choose upward direction as positive.
 
  • #13
Oh zero. I was missing something
 
  • #14
Now you CAN find the initial speed in the vertical direction.
 
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  • #15
Before I calculate the final speed, I have to get t, correct? So, am I write in believing this is 15m/-9.8 m s^2
 
  • #16
MrRandom66 said:
Before I calculate the final speed, I have to get t, correct?
I think that you mean the initial (vertical) speed.
 
  • #17
grzz said:
I think that you mean the initial (vertical) speed.

Yes, I did.
 
  • #18
If you know the initial and final vertical speeds, and the vertical distance you can find the time which is the quantity that you originally wanted to find.
 
  • #19
grzz said:
If you know the initial and final vertical speeds, and the vertical distance you can find the time which is the quantity that you originally wanted to find.

Sorry, I'm having a hard time getting my head round this.
I'm not sure what equation to use to find final velocity.
 
  • #20
You will only learn how to do physics only if you try to pick the equation yourself.
Try to find - from notes or internet - the equations you can use.
 
  • #21
OK, I've got the equation for final velocity, give me a minute and i'll work out the time.
 
  • #22
Ok, so now I have the time, am I right in believe the total time for the projectile will be the time I've just calculated, x2?
 
  • #23
Yes.
 
  • #24
Brilliant! Thanks, Now I've got to work out the launch speed... :-/

I'm going to double check my notes, but I'm sure i'll need help sooner or later.
 

FAQ: Time Projectile Problem Solved - Thanks!

What is the "Time Projectile Problem"?

The Time Projectile Problem is a physics problem that involves calculating the time a projectile takes to reach a certain point. It is commonly used in kinematics and can be solved using equations of motion.

How is the "Time Projectile Problem" solved?

The Time Projectile Problem can be solved using the equation t = √(2h/g), where t is the time, h is the height, and g is the acceleration due to gravity. This equation can be derived from the equations of motion.

What is the significance of solving the "Time Projectile Problem"?

Solving the Time Projectile Problem is important in understanding the motion of objects in the presence of gravity. It is also useful in real-world applications such as ballistics and sports, where projectiles are involved.

Are there any limitations to solving the "Time Projectile Problem" using the given equation?

Yes, the given equation only applies to objects moving in a straight line with a constant acceleration due to gravity. It does not take into account other factors such as air resistance or non-uniform gravity.

Can the "Time Projectile Problem" be solved using other methods?

Yes, there are other methods of solving the Time Projectile Problem, such as using calculus or numerical methods. These methods may be more accurate for more complex scenarios.

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