Physics Theories and Quantities Quiz

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Which concept describes why the motion happened and what causes it to happen?

Kinematics

Scalar dot product

Centripetal force

Dynamics (correct)

If the velocity of a particle is decreasing to the east, what can be said about its acceleration?

It is zero

It is changing direction

It is positive

It is negative (correct)

What happens to the instantaneous speed in relation to the magnitude of the instantaneous velocity?

Instantaneous speed is always equal (correct)

Instantaneous speed is always greater

Instantaneous speed is always less

Instantaneous speed is unpredictable

What acceleration component in circular motion is associated with the change in direction?

Radial acceleration Signup and view all the answers

In a non-uniform circular motion, what types of acceleration are present?

Both tangential and radial acceleration Signup and view all the answers

What dictates the trajectory of a projectile?

Initial velocity and acceleration Signup and view all the answers

What is the fundamental difference between a theory and a law in physics?

Theories can only be strengthened through evidence, while laws are immutable. Signup and view all the answers

Which of the following is an example of a scalar and fundamental quantity in physics?

Time Signup and view all the answers

Which method involves finding the sum of the i and j components of a vector?

Analytic method Signup and view all the answers

What is the relationship between accuracy and position in measurement?

Accuracy is the closeness of a measured value to a theoretical value, while position is the closeness of all measured values. Signup and view all the answers

If the direction of a vector is south of east, what is the sign of its i and j components?

i is positive, j is negative Signup and view all the answers

What is the relationship between a unit vector and a resultant vector?

A resultant vector is a single vector whose effect is the same as the individual vectors acting together. Signup and view all the answers

Physics Theories and Quantities Quiz

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Questions and Answers

Which concept describes why the motion happened and what causes it to happen?

If the velocity of a particle is decreasing to the east, what can be said about its acceleration?

What happens to the instantaneous speed in relation to the magnitude of the instantaneous velocity?

What acceleration component in circular motion is associated with the change in direction?

In a non-uniform circular motion, what types of acceleration are present?

What dictates the trajectory of a projectile?

What is the fundamental difference between a theory and a law in physics?

Which of the following is an example of a scalar and fundamental quantity in physics?

Which method involves finding the sum of the i and j components of a vector?

What is the relationship between accuracy and position in measurement?

If the direction of a vector is south of east, what is the sign of its i and j components?

What is the relationship between a unit vector and a resultant vector?

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