Answer:
Part a)
![x = 15.76 m](https://tex.z-dn.net/?f=x%20%3D%2015.76%20m)
Part b)
![y = 7.94 m](https://tex.z-dn.net/?f=y%20%3D%207.94%20m)
Part c)
![x = 26.16 m](https://tex.z-dn.net/?f=x%20%3D%2026.16%20m)
Part d)
![y = 7.49 m](https://tex.z-dn.net/?f=y%20%3D%207.49%20m)
Part e)
![x = 83.23 m](https://tex.z-dn.net/?f=x%20%3D%2083.23%20m)
Part f)
![y = -75.6 m](https://tex.z-dn.net/?f=y%20%3D%20-75.6%20m)
Explanation:
As we know that catapult is projected with speed 19.9 m/s
so here we have
![v_x = 19.9 cos39.9](https://tex.z-dn.net/?f=v_x%20%3D%2019.9%20cos39.9)
![v_x = 15.3 m/s](https://tex.z-dn.net/?f=v_x%20%3D%2015.3%20m%2Fs)
similarly we have
![v_y = 19.9 sin39.9](https://tex.z-dn.net/?f=v_y%20%3D%2019.9%20sin39.9)
![v_y = 12.76 m/s](https://tex.z-dn.net/?f=v_y%20%3D%2012.76%20m%2Fs)
Part a)
Horizontal displacement in 1.03 s
![x = v_x t](https://tex.z-dn.net/?f=x%20%3D%20v_x%20t)
![x = (15.3)(1.03)](https://tex.z-dn.net/?f=x%20%3D%20%2815.3%29%281.03%29)
![x = 15.76 m](https://tex.z-dn.net/?f=x%20%3D%2015.76%20m)
Part b)
Vertical direction we have
![y = v_y t - \frac{1]{2}gt^2](https://tex.z-dn.net/?f=y%20%3D%20v_y%20t%20-%20%5Cfrac%7B1%5D%7B2%7Dgt%5E2)
![y = (12.76)(1.03) - 4.9(1.03)^2](https://tex.z-dn.net/?f=y%20%3D%20%2812.76%29%281.03%29%20-%204.9%281.03%29%5E2)
![y = 7.94 m](https://tex.z-dn.net/?f=y%20%3D%207.94%20m)
Part c)
Horizontal displacement in 1.71 s
![x = v_x t](https://tex.z-dn.net/?f=x%20%3D%20v_x%20t)
![x = (15.3)(1.71)](https://tex.z-dn.net/?f=x%20%3D%20%2815.3%29%281.71%29)
![x = 26.16 m](https://tex.z-dn.net/?f=x%20%3D%2026.16%20m)
Part d)
Vertical direction we have
![y = v_y t - \frac{1]{2}gt^2](https://tex.z-dn.net/?f=y%20%3D%20v_y%20t%20-%20%5Cfrac%7B1%5D%7B2%7Dgt%5E2)
![y = (12.76)(1.71) - 4.9(1.71)^2](https://tex.z-dn.net/?f=y%20%3D%20%2812.76%29%281.71%29%20-%204.9%281.71%29%5E2)
![y = 7.49 m](https://tex.z-dn.net/?f=y%20%3D%207.49%20m)
Part e)
Horizontal displacement in 5.44 s
![x = v_x t](https://tex.z-dn.net/?f=x%20%3D%20v_x%20t)
![x = (15.3)(5.44)](https://tex.z-dn.net/?f=x%20%3D%20%2815.3%29%285.44%29)
![x = 83.23 m](https://tex.z-dn.net/?f=x%20%3D%2083.23%20m)
Part f)
Vertical direction we have
![y = v_y t - \frac{1]{2}gt^2](https://tex.z-dn.net/?f=y%20%3D%20v_y%20t%20-%20%5Cfrac%7B1%5D%7B2%7Dgt%5E2)
![y = (12.76)(5.44) - 4.9(5.44)^2](https://tex.z-dn.net/?f=y%20%3D%20%2812.76%29%285.44%29%20-%204.9%285.44%29%5E2)
![y = -75.6 m](https://tex.z-dn.net/?f=y%20%3D%20-75.6%20m)
Answer:
The work is calculated by multiplying the force by the amount of movement of an object (W = F * d). A force of 10 newtons, that moves an object 3 meters, does 30 n-m of work. A newton-meter is the same thing as a joule, so the units for work are the same as those for energy – joules.
Explanation:
Answer: 63 miles per hour
i think
Explanation:
The cyclist accelerates from 0 m/s to 9 m/s in 3 seconds with an acceleration of 3 m/s².
Answer:
Explanation:
Acceleration exerted by an object is the measure of change in speed or velocity of that object with respect to time. So the initial and final velocities play a major role in determining the acceleration of the cyclist. As here the initial velocity of the cyclist is the speed at rest and that is given as 0 m/s. Then after 3 seconds, the velocity of the cyclist changes to 9 m/s.
Then acceleration = change in velocity/Time.
![Acceleration = \frac{Change in velocity}{Time taken}](https://tex.z-dn.net/?f=Acceleration%20%3D%20%5Cfrac%7BChange%20in%20velocity%7D%7BTime%20taken%7D)
Acceleration = (9-0)/3=9/3=3 m/s².
So the cyclist accelerates from 0 m/s to 9 m/s in 3 seconds with an acceleration of 3 m/s².
The strong nuclear force overcomes the electric force of repulsion thatacts among the protons in thenucleus. B. The weak nuclear force is involved in certain types of radioactive processes. A.The strong nuclear force is a powerful force of attraction that acts only on theneutrons and protons in the nucleus.