Answer:
g = 1.25m/s²
Explanation:
Given the following data;
Mass = 5kg
Height = 6m
Gravitational potential energy = 24J
To find the acceleration due to gravity;
Potential energy can be defined as an energy possessed by an object or body due to its position. 
Mathematically, potential energy is given by the formula;

Where, 
P.E represents potential energy measured in Joules.
m represents the mass of an object. 
g represents acceleration due to gravity measured in meters per seconds square. 
h represents the height measured in meters. 
GPE = mgh
Substituting into the equation, we have;
24 = 5*6*g
24 = 30g
g = 30/24
g = 1.25m/s²
Therefore, the acceleration due to gravity on Planet X is 1.25m/s². 
 
        
             
        
        
        
Answer:
Initial velocity, U = 4.5m/s
Explanation:
Given the following data;
Final velocity, v = 12m/s
Time, t = 5 seconds 
Acceleration, a = 1.5m/s²
To find the initial velocity, we would use the first equation of motion. 
 
 
Where;
V is the final velocity. 
U is the initial velocity. 
a is the acceleration. 
t is the time measured in seconds. 
Substituting into the equation, we have;
12 = U + 1.5*5
12 = U + 7.5
U = 12 - 7.5
Initial velocity, U = 4.5m/s
 
        
             
        
        
        
False. this is just a physical change, not a chemical change. 
        
             
        
        
        
The 'phases' are solid, liquid, gas. A change from any one of those to any other one is a phase change. Like melting ice, or evaporating sweat.
        
             
        
        
        
Answer:
right after jumping so 0s and as it falls its speed will keep increasing
Explanation: