Which is not a way to accelerate an object? a. speed it up b. slow it down c. change its direction d. apply balanced forces
F = m a
no F ----> no a
The correct answer is d. apply balanced forces.
To understand why this is the correct answer, let's first understand what acceleration is. Acceleration refers to a change in an object's velocity over time. Velocity, on the other hand, is a measure of an object's speed and direction.
Now, let's look at each of the options:
a. Speed it up: Increasing the speed of an object will result in acceleration in the same direction as its initial motion.
b. Slow it down: Decreasing the speed of an object will also result in acceleration, but in the opposite direction to its initial motion.
c. Change its direction: Altering the direction of an object's motion will result in acceleration since velocity is changed.
d. Apply balanced forces: Applying balanced forces means that the total force acting on an object is zero, resulting in no net acceleration. Balanced forces will not cause any change in an object's velocity or its state of motion.
So, option d, applying balanced forces, is the correct answer as it does not cause any acceleration to the object.