The tennis ball that is hit the hardest would have the most kinetic energy.
Answer:
Apply lubrication. You can use spray-dry lubricant, which is the preferred method, or wax. Simply rubbing a candle on the runners should be enough to get things working smoothly again. If you don't have a lubricant or a candle, tape can also get the job done.
Explanation:
-90.0 °F = -67 and 7/9 °C
-90.0 °F also = +205.372 K
-5.0 °C = +23 °F
-5.0 °C also = +268.15 K
<span>65W * 8h * 3600s/h = 1.9e6 J = 447 Cal </span>
- Mass=m=10kg
- Radius=r=2m
- Speed=v=50m/s
Force:-
Now using Newton's second law