Ch. 11 Motion

Question 1

speed

Answer 1

rate of change of an object’s position

Question 2

displacement

Answer 2

measures the change in position of an object, using the starting point and ending point and noting the direction

Question 3

velocity

Answer 3

rate of change of displacement, includes both speed and direction

Question 4

acceleration

Answer 4

rate of change of velocity, can act in the direction of motion, at an angle, or opposite to the direction of motion

Question 5

mass

Answer 5

quantity of matter in an object and a measure of the object’s inertia, unit is the kilogram (kg)

Question 6

inertia

Answer 6

measures an object’s tendency to remain at rest or to stay in constant motion

Question 7

momentum

Answer 7

product of mass and velocity, quantity of motion for an object

Question 8

law of conservation of momentum

Answer 8

states that if no outside forces act on a group of objects, the momentum go the group will not change

Question 9

energy

Answer 9

ability to cause change

Question 10

kinetic energy

Answer 10

energy an object has due to its motion, depends on the object’s mass and velocity

Question 11

law of conservation of energy

Answer 11

states that energy cannot be destroyed or created, but it is only transferred from one object to another

Question 12

gravitational potential energy

Answer 12

energy an object could potentially gain if it falls, depending on its mass and the height to can fall