Unit 1 Motion
what is the equation for speed?
S = d/t
The relationship between mass, force, and acceleration is explained by ____.
Newton’s second law
A sloping surface that reduces the amount of force required to do work is called a(n) _______.
inclined plane
The top of a wave is called:
Crest
The Angle of Incidence is equal to the
Angle of Reflection
A change in an object’s position
Motion
The statement "to every action there is an equal and opposite reaction" is ____.
Newton’s third law
What is a device that makes work easier or more effective?
Machine
What type of wave is a sound wave?
longitudinal wave (mechanical)
Electrons flow from areas of ____________ voltage to areas of ____________ voltage.
higher; lower
The acceleration due to gravity is
9.8 m/s²
Newton's first law is also known as the Law of ______.
Inertia
How much time is needed to produce 640 J of work if 80 W of power is used?
8 s
Energy
Light waves travel fastest through which medium?
Vacuum
_________ is the total ground traveled with a scalar quantity while ___________ is how an object has moved from its initial to final position with a vector quantity.
Distance; displacement
If an object is at rest or at equilibrium, the forces acting on the object are _____.
balanced forces
A wheelbarrow is what class of lever?
What is the equation for velocity of a wave?
v=fλ
highness or lowness of sound
Pitch
The change in velocity with respect to time is?
Acceleration
The reaction force due to gravity that is perpendicular to the surface
Normal Force
What type of energy is the energy of motion
Kinetic Energy
The ______ of a wave is the number of wavelengths that pass a fixed point each second.
frequency
______ is the bending of a wave caused by a change in its speed as it moves from one medium to another.
Refraction