Answer :
Answer:
The speed of the object is increasing
Explanation:
From the definition of force;
F = ma .....1
Where m= mass
a = acceleration
Where acceleration is the rate at which speed/velocity increases. When a force act in the same direction as the motion of an object, then the object accelerate (i.e velocity increases) no matter how small the force is. As the force reduces the rate of increase in speed/velocity reduces but the object speed still increases at a lower rate. When the force is totally removed then the object will move at constant speed.
If the magnitude of the force is decreasing with time, then the speed of the object is;
Option D; Decreasing
The formula for force is;
Force = mass × acceleration
F = ma
Thus, acceleration is directly proportional to Force.
Since, we want to find the speed, we know that speed is;
v = at
Which means that an increase in acceleration leads to an increase in speed and a decrease in acceleration leads to a decrease in speed.
Thus, acceleration is directly proportional to speed.
Now, we are told that the magnitude of the force is decreasing with time. Since acceleration is directly proportional to force and speed, then it means that the speed is directly proportional to the force.
In conclusion, the speed of the object will be decreasing.
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