Answer:
A aceleração do carrinho é de, aproximadamente, 1,46 m/s².
Explanation:
F=ma
F: force
m: mass 
a: aceleration
66 = 45a
a=66/45= 22/15 ≅ 1,4666 m/s²
 
        
                    
             
        
        
        
Explanation:
v= (f) x ( lambda)
1.7 ms^-1/12.05 m = f =o.14 hz
 
        
             
        
        
        
Keplers laws states that planets sweep areas in equal times is second
        
             
        
        
        
The truth is both of them are more reactive metal.