Science Matter and Energy Chapter 10

combined effect of two or more vectors

states the relationship between the hypotenuse and legs of a right triangle.

Which of the following is not a form of assistance provided by simple machines?

Physical quantities having magnitude but not direction are __________ quantities.

The quantity of motion of an object, equal to the product of the object's mass and velocity, is

A "center-seeking" force that causes an object to travel in a curved path

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

Physical quantities having both magnitude and direction are _________ quantities.

A moving walkway goes west at 50 cm/s, what is the total velocity of a man walking 60 cm/s east

SI unit of power

When the overall external force on a system is zero, the momentum of the system stays constant.

For every action their is an equal and opposite reaction.

Isaac Newton published the laws of motion and universal gravitation in his book___________?

Any 2 objects attract each other with a force that depends on their masses and distance apart.

The velocity of an object does not change unless acted upon by an external force.

gravitational force exerted on an object near the surface of the earth or any celestial body.

In Physics, and change in speed, direction, or both is ____________.

The acceleration of gravity at the surface of the earth is ____________?

Under ideal conditions, a machine's work output is ____________ its work input.

A 1 kg brick and 100 kg safe were both dropped at the same time. Ignore friction. Which is true

What is the AMA of a machine that allows a man to lift a 1000 N box with 250 N?

resistance arising to an object's motion

Which does not affect the force of friction?

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

Distance traveled in a given time

The velocity at which the force of air resistance on a falling object = the object's weight is?