Physics Chapter 3: Describing Motion

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What is the primary characteristic of linear motion?

All components of an object move together as one unit (correct)

The object moves along a perfectly straight line

The object is segmented and free to move

Movement around a fixed axis in a curved path

What is the difference between speed and velocity?

Speed is the rate of change of distance, while velocity is the rate of change of displacement

Velocity is a scalar, while speed is a vector

Velocity is the rate of change of distance, while speed is the rate of change of displacement

Speed is a scalar, while velocity is a vector (correct)

What is an example of rotary motion?

A car moving along a straight road

A person walking along a curved path

A door rotating about its hinge (correct)

A ball rolling on the ground

What is the term for the movement of an object along a curved line?

Curvilinear motion Signup and view all the answers

What is the term for the movement of an object or segment around a fixed axis in a curved path?

Rotary motion Signup and view all the answers

What is the term for the movement of an object that is segmented and free to move rather than rigid or fixed?

General plane motion Signup and view all the answers

What is the name of the motion that involves both rotary and linear motion?

General plane motion Signup and view all the answers

What is the unit of measurement for distance?

Meters (m) Signup and view all the answers

What is the symbol for displacement?

d Signup and view all the answers

What is the symbol for velocity?

v Signup and view all the answers

What is the equivalent of 1 radian in degrees?

57.3° Signup and view all the answers

What is the formula for acceleration?

dv / dt Signup and view all the answers

What is the property of an object that resists a change in its current state of motion?

Inertia Signup and view all the answers

What is the difference between angular distance and angular displacement?

Angular distance is the sum of all angular changes, while angular displacement is the difference between the initial and final positions. Signup and view all the answers

What would be the angular distance and displacement of a person flexing their thigh maximally at the hip joint to 120 degrees?

Angular distance = 120°, angular displacement = 120° Signup and view all the answers

What is the unit of velocity?

m/s Signup and view all the answers

What is the relationship between an object's mass and its inertia?

The more mass an object has, the more inertia it has. Signup and view all the answers

What is the formula for momentum?

p = mv Signup and view all the answers

What would be the main difference between a bowling ball and a soccer ball of the same size?

The bowling ball would have more inertia than the soccer ball. Signup and view all the answers

What would happen if both balls were rolled at the same velocity?

The bowling ball would be harder to stop than the soccer ball. Signup and view all the answers

What is the law that states an object will continue in its state of rest or constant speed in a straight line unless acted upon by an external force?

Law of inertia Signup and view all the answers

What is the force that causes a ball to stop when it hits the ground?

All of the above Signup and view all the answers

What is the equation that relates force, mass, and acceleration?

F = ma Signup and view all the answers

What would happen if you pushed a bike?

The bike would accelerate in the direction you are pushing it. Signup and view all the answers