Question 25
To determine the correct answer for Question 25, we need to identify the net force, whether the forces acting on the block are balanced or unbalanced, and the direction of movement.
- If the net force is 11 N or 25 N, and if it is stated that the forces are unbalanced, then the block will move in the direction of the greater force.
- If the net force is balanced, then the block will not move.
Let's go through the options:
- Option a: The net force on the block is 11 N. The forces are unbalanced. The block will move to the right. (This seems possible if there's a force greater in that direction.)
- Option b: The net force on the block is 25 N. The forces are unbalanced. The block will move to the right. (This is also possible, indicating a dominant force to the right.)
- Option c: The net force on the block is 25 N. The forces are balanced. The block will move to the left. (Incorrect since if forces are balanced, the block would not move.)
- Option d: The net force on the block is 11 N. The forces are balanced. The block will move to the left. (Incorrect for the same reason.)
- Option e: The net force on the block is 11 N. The forces are balanced. The block will move to the right. (Incorrect for the reason stated.)
- Option f: The net force on the block is 11 N. The forces are unbalanced. The block will move to the left. (Possible if there’s a greater force to the left.)
- Option g: The net force on the block is 25 N. The forces are balanced. The block will move to the right. (Incorrect.)
- Option h: The net force on the block is 25 N. The forces are unbalanced. The block will move to the left. (Possible if the 25 N force is to the left and there are forces acting in the opposite direction totaling less than that.)
Without specific values or directions for the forces acting on the block, the best we can say is Options a or b seem likely, depending on the exact scenario.
Question 26
For Question 26, since the object is moving at a constant speed, applying a balanced force in the opposite direction means that the forces are equal in magnitude but opposite in direction:
- Option a: The object will change direction. (This is not necessarily true with balanced forces.)
- Option b: The object will speed up. (Not true; it will not speed up because the forces are balanced.)
- Option c: The object will continue moving at a constant speed. (This is true only if the forces are balanced; however, in this case, since one force acts opposite to its motion, this option is incorrect.)
- Option d: The object will slow down and eventually stop moving. (This is the correct answer, as a force applied in the opposite direction would indeed cause it to decelerate.)
Final Answers:
- For Question 25: Options a and b are likely possibilities, but additional context is required for definitive answers.
- For Question 26: The correct answer is d: The object will slow down and eventually stop moving.