Chapter 8: Forces in Nature

Question 0

A force is

Answer 0

A push or pull

Question 1

Newton’s first law of motion

Answer 1

A body’s tendency to resist a change in motion.

Question 2

Friction is

Answer 2

A force that acts against all objects in motion in an opposite direction.

Question 3

Newton’s second law of motion states that

Answer 3

Force is directly proportional to acceleration

Question 4

Second law of motion formula

Answer 4

F=ma

(F)orce
(M)ass
(A)cceleration

Question 5

kg•m/sec^2

Answer 5

N

(N)ewton

Question 6

Inertial mass

Answer 6

Mass measured when an object is at rest.

Question 7

Mass is

Answer 7

The amount of matter contained in a substance.

Question 8

Weight is

Answer 8

The force applied to an object by gravity.

Question 9

Weight equation

Answer 9

F = mg

(F)orce
(M)ass
(G)racity

Question 10

Newton’s third law states that

Answer 10

With every action there is an equal and opposite reaction.

Question 11

Three laws of planetary motion

Answer 11

Law of orbits, law of areas, law of periods

Question 12

Came up with the 3 laws of planetary motion

Answer 12

Johannes Kepler

Question 13

Equation to find the strength of gravity on earth

Answer 13

g = GMe/r

Question 14

When studying the forces on bodies, the body being studied is isolated from all others.

Answer 14

Free-body diagram

Question 15

A voice may be applied anywhere along it’s line of action without changing its effect

Answer 15

Principal of transmissibility

Question 16

The force transmitted by a string or other connector is called

Answer 16

Tension

Question 17

A body that is not accelerating is in

Answer 17

Translational equilibrium

Question 18

The force that achieves equilibrium is the

Answer 18

Equilibriant