Answer:
you do a chemical reaction thing
Explanation:
get baking soda and mix it with b
vinegar and then try other liquids on baking soda and see the reaction, make sure to document and take pictures 
 
        
                    
             
        
        
        
166x5.75= 954.5 meters in 5.75 seconds.
        
             
        
        
        
Answer:
Average accelation = -4V
Explanation:

V=0 m/s (because the frog stopped)
V0 = V (average velocity)
t= 0,25 s
So;

 
        
             
        
        
        
Answer:
 Re = 1 10⁴
Explanation:
Reynolds number is
          Re = ρ v D /μ
The units of each term are
        ρ = [kg / m³]
        v = [m / s]
       D = [m]
       μ = [Pa s]
The pressure
       Pa = [N / m²] = [Kg m / s²] 1 / [m²] = [kg / m s²]
       μ = [Pa s] = [kg / m s²] [s] = [kg / m s]
We substitute the units in the equation
       Re = [kg / m³] [m / s] [m] / [kg / m s]
       Re = [kg / m s] / [m s / kg]
       RE = [ ]
Reynolds number is a scalar
Let's evaluate for the given point
Where the data for methane are:
viscosity       μ = 11.2 10⁻⁶ Pa s
the density  ρ = 0.656 kg / m³
        D = 2 in (2.54 10⁻² m / 1 in) = 5.08 10⁻² m
        Re = 0.656 4 2 5.08 10⁻² /11.2 10⁻⁶
        Re = 1.19 10⁴
 
        
             
        
        
        
S: 198 m 
v=39 m/s 
u=0
t=? 
a=?
v²=u²+2as
(39)²=(0)²+2(a)(198) 
1521=396a
1521/396=a
3.84 m/s^2 = a 
Hope I helped :)