Y - yo = Vo*t - g * (t^2) / 2
Vo = - 9.0 m/s
t = 0.50 s
=> y - yo = -9.0 m/s * 0.5 s - 9.8 m/s^2 * (0.5s)^2 / 2 = - 4.5m - 1.225m = - 5.725 m.
Answer: option c) - 5.7
B. Some of the ball’s energy is transformed to thermal energy.
Hope this helps you!
Answer:
True
Explanation:
When an object is held higher, it has more potential energy because more energy is stored from its higher position to swing further than it would have, had it been held lower.
To solve this problem it is necessary to apply the concepts related to the Moment. The moment in terms of the Force and the time can be expressed as
![\Delta P = F\Delta t](https://tex.z-dn.net/?f=%5CDelta%20P%20%3D%20F%5CDelta%20t)
F = Force
![\Delta t = Time](https://tex.z-dn.net/?f=%5CDelta%20t%20%3D%20Time)
At the same time the moment can be expressed in terms of mass and velocity, mathematically it can be given as
![P = m \Delta v](https://tex.z-dn.net/?f=P%20%3D%20m%20%5CDelta%20v)
Where
m = Mass
Change in velocity
Our values are given as
![\Delta t=1.65s](https://tex.z-dn.net/?f=%5CDelta%20t%3D1.65s)
By equating the two equations we can find the Force,
![F\Delta t = m\Delta v](https://tex.z-dn.net/?f=F%5CDelta%20t%20%3D%20m%5CDelta%20v)
![F = \frac{m\Delta v}{\Delta t}](https://tex.z-dn.net/?f=F%20%3D%20%5Cfrac%7Bm%5CDelta%20v%7D%7B%5CDelta%20t%7D)
![F = \frac{62(1.1-5.5)}{1.65}](https://tex.z-dn.net/?f=F%20%3D%20%5Cfrac%7B62%281.1-5.5%29%7D%7B1.65%7D)
Therefore, the net average force will be:
![F = - 165N](https://tex.z-dn.net/?f=F%20%3D%20-%20165N)
The negative symbol indicates that the direction of the force is upwards.
K= 37°C+273.15
K= 310.15
Round to the nearest whole number
310K