if a golf ball has a mass of 46g and it goes 3.4m in 2.3 seconds when shot from a catapult what is it kentic energy

Guest Oct 23, 2017

#1**+1 **

Google says the formula for momentum is\(p=mv\), where *p* = the momentum of the object, *m* is the mass of the object, and *v* is the velocity of the object. Velocity is just speed with a given direction, so we can solve for speed in place of velocity for here, but not everywhere. The formula for speed is\(s=\frac{d}{t}\), where *s* is the speed of the object, d is the distance traveled, and *t* is the time it takes to move that distance. Using the given formula, we can solve for speed:

3.4 meters/2.3 seconds = about 1.47826087 meters/second

Since momentum is measured in **kilogram**-meters/second, we need to convert 46 grams to kilograms:

46 grams/1000 (conversion rate) = 0.046 kg

Now we combine the 2 outputs:

1.4782608695652174*0.046 = 0.068 kilogram-meters/second.

*Note: If you use the calculator with the decimal, you get the answer, a bunch of 0's, then 4, because the decimal is not *exactly* equal to the fraction given, however, if the fraction is used, you get exactly 0.068, because the 0.046 cancels out the 2.3 on bottom.

helperid1839321
Oct 24, 2017