Answer:
you calculate a specific type of run for example 100m and it takes 20 seconds to finish and calculate the time it takes them to finish
hope this helps
have a good day :)
Explanation:
 
        
             
        
        
        
Answer:
684J
Explanation:
So basically the formula for gravitational potential energy is Mass X Gravity X height. That is G.p.e = mgh 
We don't have the mass but since we have the height, we multiply directly with the height since the quantity of weight is already given.
so G.p.e = 360 X 1.9 = 684J
Note that; The answer is in joules because g.p.e is work done.
Hope that was helpful!!
 
        
             
        
        
        
Answer: THE ANSWER IS C! 
The total energy of a system can decrease only if energy leaves the system. 
Explanation: Apex! 
 
        
             
        
        
        
                 Force = (mass) x (acceleration)
                 Force = (18 kg) x (3 m/s²) = 54 newtons
As long as you continue pushing the cart with 54 newtons of force, 
it will accelerate at 3 m/s².  
At the instant you release it, or keep your hands on it but stop pushing, 
it will stop accelerating.  It'll continue forward at the speed it had when 
the 54 newtons of force stopped.