Answer:
15m/s
Explanation:
add the two speeds and divide by 2
10+20=30 
30/2=15
 
        
             
        
        
        
Answer:
241.7 s
Explanation:
We are given that 
Charge of particle=
Kinetic energy of particle=
Initial time=
Final potential difference=
We have to find the time t after that the particle is released and traveled through a potential difference 0.351 V.
We know that 

Using the formula 


Initial voltage=

Using the formula 





Hence, after 241.7 s the particle is released has it traveled through a potential difference of 0.351 V.
 
        
             
        
        
        
<span>A cumulus cloud is puffy and white.
</span><span>Vinegar has a very sour smell.
</span><span>Water boils at 100 degrees Celsius. </span>
        
                    
             
        
        
        
Answer:
The red car would experience the greatest acceleration.
Explanation:
Newton says that Force equals mass times acceleration or F = ma
We get a = F/m
If we want the greatest acceleration or a, mass or m must be the lowest.