1. Define all of the physical quantities used in kinematics dynamics, and energy
ID: 1864954 • Letter: 1
Question
1. Define all of the physical quantities used in kinematics dynamics, and energy for translational motion. (e.g. displacement/position, velocity, acceleration, force, mass momentum, energy). Show all of the SI units for all of these. 2. Define all of the physical quantities used in kinematics dynamics, and energy for rotational motion. Show all of the Sl units for all of these. 3. Write Newton's Second Law for both translational and rotational motions. Describe all of the physical quantities involved. 4. Provide the answer to the following question: Are you rocket scientist? Explain your answer.Explanation / Answer
Displacement is a vector quantity whose length is shortest distance from initial to final point.Unit is metre.
Velocity is a vector quantity given by displacement per unit time.Unit is m/s.
Acceleration is also a vector quantity given by velocity per unit time.Unit is m/s2.
Force is a vector quantity defined as product of mass and acceleration of a body.Unit is Newton.
Mass is a scalar quantity which represent amount of matter in a body .Unit is kg.
Momentum is a vector quantity measured as product of mass and velocity of a body.Unit is kg-m/s
Energy is capacity of doing work of a system. Unit is Joule.
Newton's Second Law :
For translation motion ,The second law states that the rate of change of linear momentum of a body is directly proportional to the force applied, and this change in linear momentum takes place in the direction of the applied force.
For rotational motion, The second law states that the rate of change of angular momentum of a body is directly proportional to the torque applied, and this change in angular momentum takes place in the direction of the applied torque.
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