To solve the question regarding the effects of a force applied to a moving body, we will analyze each of the options given: change in speed, change in direction of motion, and change in shape of the body.
### Step-by-Step Solution:
1. **Understanding the Concept of Force**:
- A force is any interaction that, when unopposed, will change the motion of an object. This includes changes in speed, direction, and even shape.
2. **Change in Speed**:
- When a force is applied to a moving body, it can increase or decrease the speed of that body.
- For example, if a car is moving at a certain speed and the driver accelerates (applying force), the speed of the car increases. Conversely, if the brakes are applied (also applying force), the speed decreases.
**Conclusion**: Yes, a force can change the speed of a moving body.
3. **Change in Direction of Motion**:
- A force can also change the direction in which a body is moving.
- For instance, when a ball is thrown and hits a bat, the force exerted by the bat changes the direction of the ball's motion.
**Conclusion**: Yes, a force can change the direction of motion of a moving body.
4. **Change in Shape of the Body**:
- Applying force can change the shape of the body, particularly if the body is not rigid.
- For example, if you squeeze a soft rubber ball, its shape changes due to the force applied. However, if you apply force to a rigid object like a brick, it may not change shape.
**Conclusion**: Yes, a force can change the shape of a body, especially if it is not rigid.
### Final Answer:
The possible effects of a force applied to a moving body can include changes in:
- (i) Speed
- (ii) Direction of motion
- (iii) Shape of the body
All three options are correct.
