The answer is D
Explanation:
        
             
        
        
        
Answer
given,
distance = 140 m
time, t = 3.6 s
moving speed = 53 m/s
a) distance = (average velocity) x time
     
     
        v₀ + 53 = 77.78
         v₀ = 24.78 m/s or 25 m/s
b) 
    
          a = 7.8 m/s²
using equation of motion
   v₀² = v₁² + 2 a s
   53² = 0²+ 2 x 7.8 x s
    s = 180 m
 
        
             
        
        
        
I changed my undershorts.  The elastic on the old ones I put on that day was deteriorated, and it completely failed when I dripped lab coffee on it, causing falldown.
 
        
                    
             
        
        
        
Answer:
2.3 Nm clockwise
Explanation:
Take counterclockwise to be positive and clockwise to be negative.
∑τ = (3 N) (2.5 m) − (7 N) (1.4 m)
∑τ = 7.5 Nm − 9.8 Nm
∑τ = -2.3 Nm
The net torque is 2.3 Nm clockwise.