suppose the dry ice block is moving to begin with and we exert a steady force,either speeding up or slowing down.how does the block behave? now suppose we make the steady force smaller and smaller.how does the dryice block behave? how will it behave when the force we are exertin reaches zero.?
In order to understand how the dry ice block behaves in different scenarios, let's consider the effect of a steady force on its motion.
1. Steady force to speed up or slow down:
When a steady force is exerted on a moving dry ice block, it will experience acceleration in the direction of the force. If the force is applied in the same direction as the initial motion, it will speed up the block. On the other hand, if the force is applied in the opposite direction, it will slow down the block. The block's speed will change according to the magnitude and duration of the force applied.
2. Smaller and smaller steady force:
If we continuously decrease the magnitude of the steady force applied to the moving dry ice block, the block's acceleration will reduce accordingly. Eventually, the force will become so small that it will no longer have a significant effect on the block's motion. At this point, the block will continue moving with a consistent velocity, which means it will have no change in speed or direction.
3. Force reaches zero:
When the force we are exerting on the dry ice block reaches zero, it means there is no external force acting on the block. According to Newton's first law of motion (also known as the law of inertia), an object in motion will continue moving at a constant velocity if no external force is applied. Therefore, when the force reaches zero, the dry ice block will continue moving with its initial velocity, maintaining the same speed and direction.
It's important to note that these explanations are based on idealized scenarios and assume a frictionless environment. In real-world situations, factors like friction may play a role and affect the behavior of the dry ice block.