Physics Test 2

Question 1

Equation For Force

Answer 1

Force = mass x acceleration

Question 2

Newtons First Law

Answer 2

Objects in motion stay in motion and objects at rest stay at rest unless acted on by an unbalanced force (inertia)

Question 3

Newtons Second Law

Answer 3

Force is the product of mass and acceleration

Question 4

Newtons Third Law

Answer 4

Every action has it’s equal opposite reaction

Question 5

Friction is the force that ___

Answer 5

opposes motion

Question 6

Two types of friction:

Answer 6

Static - objects are not moving relative to each other
Kinetic - objects are sliding

Question 7

Which type of friction is weaker?

Answer 7

Kinetic friction

Question 8

Equilibrium

Answer 8

condition when all forces on an object are balanced (Net force = 0)

Question 9

Momentum

Answer 9

Inertia in motion (abbreviated with a p)

Question 10

Momentum is a ___

Answer 10

vector quantity

Question 11

Equation for momentum

Answer 11

P = mv (mass x velocity)

Question 12

Impulse

Answer 12

Change in momentum depending on force and time

Question 13

Equation for Impulse

Answer 13

△p = ft (force x time)

Question 14

Stronger forces create __

Answer 14

more of a change in momentum

Question 15

When forces act on a longer time period ___

Answer 15

There is a greater change in momentum

Question 16

Unit for momentum

Answer 16

kg x m/s

Question 17

Units for change in momentum/impulse

Answer 17

Newton x second
kg x m/s

Question 18

Elastic Collision

Answer 18

Objects bounce off each other and momentum is conservd

Question 19

Inelastic Collision

Answer 19

Objects stick together, momentum is conserved