Answer:
The correct option is D
Explanation:
This question can be better understood when discussed using the Newton's first law of motion which states that an object would continue to move with a uniform speed (in a straight line) unless acted upon by an external force. What happens here (in the question) is that the bike rider would have continued moving at a constant speed (to the right) if not for the opposing force of the wind that acted against her (to the left). <u>This wind/force would cause her speed to reduce or slow down (as posited by the law)</u>.
 
        
             
        
        
        
Answer:
9.6m/s
Explanation:
Using the equation S=d/t where s=speed, d=distance, and t=time
plug in the known variables
S=120m/12.5s
S=9.6m/s
 
        
             
        
        
        
<span>this  may help you
As far as the field goes, the two charges opposite each other cancel! 
So E = kQ / d² = k * Q / (d/√2)² = 2*k*Q / d² ◄ 
and since k = 8.99e9N·m²/C², 
E = 1.789e10N·m²/C² * Q / d² </span>
        
                    
             
        
        
        
Answer:
Explanation:
Force on a moving charge is given by the following relation
F = q ( v x B )
for proton 
q = e  ,   v = vi  , B = Bk 
F = e ( vi x Bk )
= Bev - j 
= - Bevj 
The direction of force is along negative of y axis or -y - axis. 
for electron 
q = - e  ,   v = vi  , B = Bk 
F = - e ( vi x Bk )
= - Bev - j 
=  Bevj 
The direction of force is along positive  of y axis or + y - axis.