Answer:
8400 N
Explanation:
We are given that
Mass,m=1.2 kg
Initial speed,u=-8 m/s
Final speed,v=6 m/s
Time,![\Delta t=2 ms=2\times 10^{-3} s](https://tex.z-dn.net/?f=%5CDelta%20t%3D2%20ms%3D2%5Ctimes%2010%5E%7B-3%7D%20s)
![1 ms=10^{-3} s](https://tex.z-dn.net/?f=1%20ms%3D10%5E%7B-3%7D%20s)
We have to find the magnitude of the average force on the ball during this collision.
Change in momentum,=![\Delta p=m(v-u)=1.2(6+8)=16.8 kgm/s](https://tex.z-dn.net/?f=%5CDelta%20p%3Dm%28v-u%29%3D1.2%286%2B8%29%3D16.8%20kgm%2Fs)
Average force,![F_{avg}=\frac{\Delta p}{\Delta t}](https://tex.z-dn.net/?f=F_%7Bavg%7D%3D%5Cfrac%7B%5CDelta%20p%7D%7B%5CDelta%20t%7D)
Using the formula
![F_{avg}=\frac{16.8}{2\times 10^{-3}}=8400 N](https://tex.z-dn.net/?f=F_%7Bavg%7D%3D%5Cfrac%7B16.8%7D%7B2%5Ctimes%2010%5E%7B-3%7D%7D%3D8400%20N)
Hence, the magnitude of the average force on the ball during this collision=8400 N
It's most likely visible to you, even though we can't see it at all. I wonder why.
Answer:
3 class lever .
Explanation:
Third class lever: In the third class lever, the effort is located in between fulcrum and load. Here, effort arm is shorter than the load arm. It cannot lift the heavy load but increases the speed of doing work. ............. can you me as brainlist pls
Answer:
test her prototype and collect data about its flight
Answer:
Straight Angle.
Explanation:
The two types of mirrors, i.e., concave mirror and convex mirror, acts in the same way when a ray is directed towards its pole, and the ray bounces back with the same intensity, and we get the exact same angle.
And, the initial angle and the reflected angle are exactly the same.
Hence, when the ray strikes the pole, in straight angle, then it forms a straight angle.
Hence, from the given option,
The correct answer is straight angle.