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Dynamics Short and Detailed Question Answers Physics 9th

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Dynamics Short and Detailed Question Answers Physics 9th

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Questions and Answers

In physics, what is the study of the motion of objects called?

Quantum mechanics

Electromagnetism

Thermodynamics

Dynamics (correct)

Which of the following is a unit of force?

Joule

Volt

Newton (correct)

Watt

What is the SI unit of momentum?

Kilogram

Newton-second (correct)

Joule

Meter per second

What is the SI unit of force?

Newton Signup and view all the answers

Which of the following is a derived unit?

Newton Signup and view all the answers

What is the formula for calculating kinetic energy?

$KE = \frac{1}{2} mv^2$ Signup and view all the answers

Which of the following is a vector quantity?

Velocity Signup and view all the answers

What is the SI unit of work and energy?

Joule Signup and view all the answers

Which of the following statements best describes Newton's third law of motion?

For every action, there is an equal and opposite reaction. Signup and view all the answers

Study Notes

Core Physics Concepts

The study of the motion of objects is known as kinematics.
A unit of force is the Newton (N).
The SI unit of momentum is the kilogram meter per second (kg·m/s).
The SI unit of force is also the Newton (N).
A derived unit is created by combining fundamental units; for example, velocity (m/s) is derived from distance and time.
The formula for calculating kinetic energy is given by KE = 0.5 * m * v², where m is mass and v is velocity.
A vector quantity has both magnitude and direction; examples include velocity and force.
The SI unit of work and energy is the Joule (J).
Newton's third law of motion states that for every action, there is an equal and opposite reaction, emphasizing the interaction between forces.

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Description

Test your knowledge of dynamics with short and detailed question answers in this physics 9th grade quiz. Challenge yourself with questions about motion, forces, and Newton's laws.