Physics 10: Calculating Velocity of a Ball Launched from a Slingshot

In summary, the conversation discusses a question regarding the speed of a ball that was launched towards a wall using a slingshot. The ball has a mass of 0.675 kg and was pulled back 1.75 m with a force of 3.50x10^2 N. The conversation suggests using the equation Ep(elas)=fxd divided by the mass to find the velocity. The participants also mention using force and energy values to obtain the desired information.
  • #1
reesie
1
0
Here's the question:
1. A ball with a mass of 0.675 kg was launched towards a wall. If it was pulled back a distance of 1.75 m in the slingshot using 3.50x10^2 N of force, what is the speed of the ball as it is released from the slingshot?
2. Ep(elas)=fxd?? that could possibly be divided by the mass to give you velocity
3...
I really have no idea and I really need help.
 
Last edited:
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  • #2
They gave a spring constant and a distance. You can get both force and energy values from those given quantities. Which one do you want? In other words, what do you want, and which value will be more useful in obtaining what you want?
 

1. What is the formula for calculating velocity of a ball launched from a slingshot?

The formula for calculating velocity of a ball launched from a slingshot is v = √(2gh), where v is the velocity, g is the acceleration due to gravity (9.8 m/s²), and h is the height from which the ball was launched.

2. How do you determine the height from which the ball was launched?

The height can be determined by measuring the distance from the slingshot to the point where the ball was released. This distance will be used as the value for h in the velocity formula.

3. Can the velocity of the ball be calculated if the height is not known?

No, the height is a crucial component in the velocity formula and without it, the velocity cannot be accurately calculated.

4. Is the velocity of the ball affected by the mass of the ball?

Yes, the velocity of the ball will be affected by the mass of the ball. A heavier ball will require more force to be launched from the slingshot, resulting in a higher velocity.

5. How does air resistance affect the velocity of the ball?

Air resistance can reduce the velocity of the ball as it travels through the air. This is due to the force of air pushing against the ball, slowing it down. However, this effect is minimal for small objects, such as a ball launched from a slingshot.

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