The momentum will become 1/4 as much.
0.100 v === 0.25 v 
        
             
        
        
        
Answer:

Explanation:



r = Distance between the charges



k = Coulomb constant = 
Net force is given by

The force on the particle  is
 is  .
.
 
        
             
        
        
        
Answer:
μ = 0.03
Explanation:
In order for the trunk not to slide the frictional force between the turntable and the trunk must be equal to the unbalanced force applied on the trunk by the motion of the turntable. Therefore,
Unbalanced Force = Frictional Force
but,
Unbalanced Force = ma (Newton's second law of motion)
Frictional Force = μN = μW = μmg
Therefore,
ma = μmg
a = μg
μ = a/g
where,
μ = coefficient of static friction between the trunk and the turntable = ?
a = tangential acceleration of trunk = 0.3 m/s²
g = 9.8 m/s²
Therefore,
μ = (0.3 m/s²)/(9.8 m/s²)
<u>μ = 0.03</u>
 
        
             
        
        
        
Heya!!
For calculate velocity, lets applicate formula
                                                  
                                                <u>Δ   Being   Δ</u>
                                          d = Distance = 3790 m
                                              t = Time = 249 s
                                              v = Velocity = ?
⇒ Let's replace according the formula and clear "v":

⇒ Resolving

Result:
The velocity is <u>15,22 meters per second.</u>
Good Luck!!
 
        
             
        
        
        
Answer:
2065.005 m/s²
Explanation:
t = Time taken
u = Initial velocity
v = Final velocity
s = Displacement
a = Acceleration
g = Acceleration due to gravity = 9.81 m/s²

Now H-h = 42.3 - 0.2 = 42.1 cm = 0.421 m
The final velocity will be the initial velocity

Acceleration of the frog is 2065.005 m/s²