The key components of this question are three blocks of varying masses that are connected by strings and being pulled by a force at one end. There is no friction between the blocks and the surface they are on.
Without friction, the blocks will continue to move in the direction of the applied force without any slowing down or change in direction. This is because there is no opposing force to counteract the applied force.
The acceleration of each block is directly proportional to its mass. This means that the block with the largest mass will experience the least amount of acceleration, while the block with the smallest mass will experience the most acceleration.
No, the force applied to the blocks will not affect their speed as there is no friction to overcome. The blocks will continue to move at a constant speed in the direction of the applied force.
This question relates to Newton's First Law of Motion, which states that an object will remain at rest or in motion with a constant velocity unless acted upon by an external force. In this case, the blocks will continue to move at a constant velocity in the direction of the applied force unless acted upon by an external force, such as friction.