physics

Question 1

speed

Answer 1

distance divided by time.

Question 2

newtons three laws

Answer 2

In the first law, an object will not change its motion unless a force acts on it. In the second law, the force on an object is equal to its mass times its acceleration. In the third law, when two objects interact, they apply forces to each other of equal magnitude and opposite direction.

Question 3

velocity

Answer 3

quantity that designates how fast and in what direction a point is moving

Question 4

acceleration

Answer 4

rate at which velocity changes with time, in terms of both speed and direction

Question 5

formula for speed

Answer 5

s = d/t

Question 6

displacement

Answer 6

the change in position of an object.

Question 7

vector qualities

Answer 7

a quantity that has both magnitude and direction.

Question 8

applied

Answer 8

a force that is applied to an object by a person or another object

Question 9

frictional

Answer 9

the force generated by two surfaces that contact and slide against each other

Question 10

normal

Answer 10

the force that surfaces exert to prevent solid objects from passing through each other.

Question 11

air resistance

Answer 11

the force that acts in the opposite direction to an object moving through the air

Question 12

gravitational

Answer 12

pulls objects with mass toward each other