Question
5. Acceleration Calculation: A force of 60 N is applied to a 15 kg object. What is the acceleration of the object? 6. Net Force Direction An object is being acted upon by two forces: 25 N to the right and 10 N to the left. In which direction will the object move, and what is the net force? 7. Balanced Forces Example: Describe a real-life situation where balanced forces are acting on an object. Explain how you know the forces are balanced. 8. Unbalanced Forces Example: Provide a real-life example of unbalanced forces causing motion. Explain how the forces are unbalanced. 9. Mass and Acceleration If the same net force is applied to two objects of different masses,how will their accelerations compare? Explain using Newton's Second Law.
Solution
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Arabella
Veteran · Tutor for 9 years
Answer
5. **Acceleration Calculation:*** **Formula:** Newton's Second Law states Force = mass * acceleration (F=ma). We can rearrange this to find acceleration: a = F/m* **Calculation:** a = 60 N / 15 kg = 4 m/s²* **Answer:** The acceleration of the object is 4 m/s².6. **Net Force Direction:*** **Calculation:** Since the forces are acting along the same line, we can subtract the smaller force from the larger force to find the net force. 25 N (right) - 10 N (left) = 15 N (right)* **Answer:** The object will move to the right, and the net force is 15 N to the right.7. **Balanced Forces Example:*** **Scenario:** A book resting on a table.* **Explanation:** Gravity is pulling the book downwards, and the table is exerting an equal and opposite upward force (the normal force) on the book. We know the forces are balanced because the book is not accelerating; it remains at rest.8. **Unbalanced Forces Example:*** **Scenario:** A person pushing a shopping cart.* **Explanation:** The person applies a force to the cart in the forward direction. If this force is greater than the opposing forces of friction and air resistance, the cart will accelerate in the forward direction. The forces are unbalanced because there is a net force in the forward direction, causing motion.9. **Mass and Acceleration:*** **Explanation:** Newton's Second Law (F=ma) states that acceleration is directly proportional to the net force and inversely proportional to the mass. Therefore, if the same net force is applied to two objects with different masses, the object with the smaller mass will experience a greater acceleration, and the object with the larger mass will experience a smaller acceleration. For example, if you push a small toy car and a large truck with the same force, the toy car will accelerate much more than the truck.