Answer:
(E)56.0 m/s
Explanation:
Height =h=-160 m
Because the wallet moving in downward direction
Time=t=7 s
Final speed of wallet=v=0
We have to find the speed of helicopter ascending  at the moment when the passenger let go of the wallet.

Where 
Substitute the values 



Option (E) is true
 
        
             
        
        
        
Answer:
well, it is not a solid path and thats a teeny tiny fact
 
        
             
        
        
        
Answer:
accuracy
Explanation:
You are trying to measure the mass of several different objects when you realize that there is a large wad of gum stuck to the underside of the balance pan. Removing the gum will improve the <u>accuracy</u> of your measurements.
 
        
             
        
        
        
Answer: unequal forces 
Explanation: in order for something to accelerate it must speed up or slow down .  When unequal forces react it casuse a change in motion which is also know as acceleration .
 
        
             
        
        
        
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