Answer:
Speed of cart's might be less than the high speed after 5 seconds.
Explanation:
Given that,
A fan cart with the fan set to high rolled across the floor.
Let the speed of fan cart with set to high is  per second.
 per second. 
The fan supplies a force to the cart. If a lower fan speed were used, less force would be applied. This would cause a slower change in the cart's speed. So, the cart would be rolling more slowly than  per second after 5 seconds. The speed of cart's might be less than
 per second after 5 seconds. The speed of cart's might be less than  per second.
 per second.
Force is needed
A. for a moving object to keep moving at the same speed and direction
B. for a moving object to change its speed
C. for a motionless object to remain still
D. to prevent a moving object from turning
Hence,
Speed of cart's might be less than the high speed after 5 seconds.
 
        
             
        
        
        
Good morning.
We have:

Where 
j is the unitary vector in the direction of the 
y-axis.
We have that 

We add the vector 
-a to both sides:

Therefore, the magnitude of 
b is 
47 units.
 
        
        
        
<span>
At the Earth's surface, warm air expands and rises, creating 
what is known as an area of low pressure.
 Cold air is dense and sinks to the surface to create what is 
known as an area of high pressure.</span>
        
                    
             
        
        
        
<span>A light-year measures the distance that light travels in 1 year. 
Answer : B ) Distance
-Hope this helps.</span>
        
                    
             
        
        
        
Answer:
the object is decelerating