D) 
Explanation:
Coz the position changes with time but the position change is not constant throughout time So, D) does not have constant velocity 
 
        
                    
             
        
        
        
Answer:
A) Burning fossil fuels pollutes the environment 
 
        
                    
             
        
        
        
Answer
given,
initial speed of the car = 90 m/s
final speed of the car = 0 m/s
distance taken to stop = 110 m
calculating the acceleration of the car = ?
using the equation of motion 
 v² - u² = 2 a s
 0² - 90² = 2 x a x 100
 
    a = 40.5 m/s²
acceleration of the formula one car is equal to a = 40.5 m/s²
 
        
             
        
        
        
Answer:
37 W
Explanation:
Power is the time rate of dissipation or absorbing energy. The power supplied or absorbed by an element is the product of the current flowing through the element and the voltage across the element. Power is measured in watts. If the power is positive then it is absorbed by the element and if it is negative then it is supplied by the element.
Power = voltage * current 
For element A: Power = 36 V * -4 A = -144 W
For element B: Power = -20 V * -4 A = 80 W
For element C: Power = -24 V * 4 A = -94 W
For element D: Power = -80 V * -1.5 A = 120 W
For element E: Power = 30 V * 2.5 A = 75 W
The total power developed in the circuit = sum of power through the element = (-144 W) + 80 W + (-94 W) + 120 W + 75 W = 37 W