Practice - Forces and Momentum
Practice Questions
Test your understanding with targeted questions
An object is moving at a constant velocity of in a straight line. What is the net external force acting on it?
* Answer: Zero.
* Hint: According to Newton's First Law (Law of Inertia), if the velocity is constant, the acceleration is zero, which means .
💡 Hint: According to Newton's First Law (Law of Inertia), if the velocity is constant, the acceleration is zero, which means .
If you double the net force acting on an object while keeping its mass constant, what happens to its acceleration?
* Answer: The acceleration doubles.
* Hint: Use the formula . Force and acceleration are directly proportional when mass is constant.
💡 Hint: Use the formula . Force and acceleration are directly proportional when mass is constant.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
Which of Newton's Laws best explains why you should wear a seatbelt?
* Type: mcq
* Options: A) Second Law, B) First Law, C) Third Law, D) Law of Universal Gravitation
* Correct Answer: B (The First Law/Inertia; your body wants to keep moving forward if the car stops).
💡 Hint: No hint provided
True or False: Momentum is a scalar quantity.
* Type: boolean
* Options: True, False
* Correct Answer: False (It is a vector; direction matters).
💡 Hint: No hint provided
2 more questions available