Physical science 9th Abeka

What is the equation for Pythagorean theorem

combination of one or more fixed and movable pulleys

Multiplication of force by a machine when friction is negligible

a rocket is an example of the

inclined plane wrapped around a rod

states that the laws of motion are the same in all inertial frames

any two objects attract each other through gravitational force

Power

The acceleration of gravity at surface of the Earth is

The difference between a levers fulcrum and the input force is the length of

the velocity of an object does not change unless the object is acted upon by an external force

name the resistance arising to an object's motion through a fluid or across a surface

what is the SI unit of force

Physical quantities having magnitude but not direction are ? quantities

free fall distance

A Lever that has the input and output forces on either side of the fulcrum is a ? lever

sloping surface that allows an object to be raised without lifting it straight up

Average velocity

In physics any change in speed direction or both

Newton’s Second law of motion

average speed

Physical quantities Having both magnitude and direction are ? quantities

A measure of how well a machine converts input work into output work is

The velocity at which the force of air resistance on a falling object equals the objects weight

What is the average speed of a car that travels 500 km in 10 hours

the rate of doing work

wheel over which a rope passes

Isaac Newton publish the laws of motion and universal gravitation in his book

special form of inclined plane that modifies the applied force and directs it to the side

The Quantity of motion of an object equal to the product of the object's mass

similar to a circular lever

The vector representing the change in an object's position is

The SI unit of power

for every action there is an equal and opposite reaction

The difference between a levers fulcrum and the input force is the length of

one of the most versatile machines

1kg brick in a 100kg safe for both dropped from the top building at same time what lands first

Two Vectors that are either in the same direction or in opposite directions are

type of friction that affects moving object is

Law of universal Gravitation

center seeking force that causes an object to travel in curved path rather than a straight line