Answer:
PE = 44.1 J
Explanation:
Ok, to have the specific data, the first thing we must do is convert from grams to kilograms. Since mass must always be in kilograms (kg)
We have:
- 1 kilograms = 1000 grams.
We convert it using a rule of 3, replacing, simplifying units and solving:
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Earth's gravity is known to be 9.8 m/s², so we have:
Data:
- m = 0.3 kg
- g = 9.8 m/s²
- h = 15 m
- PE = ?
Use formula of potencial energy:
Replace and solve:
Since the decimal number, that is, the number after the comma is less than 5, it cannot be rounded, then we have this result.
The potential energy of the volleyball is <u>44.1 Joules.</u>
Greetings.
 
        
             
        
        
        
Force = (mass) x (acceleration)                  Newton's second law of motion.
Force = (2 kg) x (3 m/s²)  =  6 newtons.
        
             
        
        
        
Answer:
The sum of the initial and final velocity is divided by 2 to find the average. The average velocity calculator uses the formula that shows the average velocity (v) equals the sum of the final velocity (v) and the initial velocity (u), divided by 2.
 
        
             
        
        
        
Answer:
Hey!!
Your answer is: 0.72
Explanation:
if 760=1  then...
550=x
=550÷760= 0.72 in two s.f
 
        
             
        
        
        
Answer:
a)  , b)
, b) 
Explanation:
a) Let consider two equations of equilibrium, the first parallel to ski slope and the second perpendicular to that. The equations are, respectively:
 
 
The force on the skier is:



b) The equations of equilibrium are the following:

The force on the skier is:


