Step-by-step explanation:
) Every positive rational number is greater than 0.
(ii) Every negative rational number is less than 0.
(iii) Every positive rational number is greater than every negative rational number.
(iv) Every rational number represented by a point on the number line is greater than every rational number represented by points on its left.
(v) Every rational number represented by a point on the number line is less than every rational number represented by paints on its right
b
Yes because the answer would be
X=5
Answer:
1. (2,3)
2. (7,-2)
3. (-4,-1)
4. No solutions
Step-by-step explanation:
Solve using substitution or elimination.
Answer:
if your going based off of the path that they are taking i say yes because the will meet at the end point or in this case the 1 yard line
Step-by-step explanation:
Step-by-step explanation:
We have,
Mass of ball is 9 kg
Initial speed, u = 5 m/s
Final speed, v = -2 m/s (negative as it bounces off)
(a) The change in velocity of the bowling ball is :
![\Delta v=v-u\\\\\Delta v=-2-5\\\\\Delta v=-7\ m/s](https://tex.z-dn.net/?f=%5CDelta%20v%3Dv-u%5C%5C%5C%5C%5CDelta%20v%3D-2-5%5C%5C%5C%5C%5CDelta%20v%3D-7%5C%20m%2Fs)
(b) Change of momentum of the ball is :
![p=m\Delta v\\\\p=90\times (-7)\\\\p=-630\ kg-m/s](https://tex.z-dn.net/?f=p%3Dm%5CDelta%20v%5C%5C%5C%5Cp%3D90%5Ctimes%20%28-7%29%5C%5C%5C%5Cp%3D-630%5C%20kg-m%2Fs)
|p| = 630 kg-m/s
(c) Impulse momentum theorem states that the change in momentum of the ball is equal to the impulse exerted on the ball. So, impulse is 630 kg-m/s.
(d) Impulse is also given by :
![J=F\times t\\\\F=\dfrac{J}{t}\\\\F=\dfrac{630}{0.3}\\\\F=2100\ N](https://tex.z-dn.net/?f=J%3DF%5Ctimes%20t%5C%5C%5C%5CF%3D%5Cdfrac%7BJ%7D%7Bt%7D%5C%5C%5C%5CF%3D%5Cdfrac%7B630%7D%7B0.3%7D%5C%5C%5C%5CF%3D2100%5C%20N)