Chapter 4 - Forces

Question 0

Normal F
N
(Definition)

Answer 0

The contact force exerted by a surface on an object.

Question 1

Friction F
f

(Definition)

Answer 1

The contact force that acts to oppose sliding motion between surfaces.

Question 2

Spring F
sp
(Definition)

Answer 2

A restoring force; that is, the push or pull a spring exerts on an object.

Question 3

Tension F
t
(Definition)

Answer 3

The pill exerted by a string, rope, or cable when attached to a body and pulled taut.

Question 4

Thrust F
thrust
(Definition)

Answer 4

A general term for the forces that move objects such as rockets, planes, cars and people.

Question 5

Weight F
g
(Definition)

Answer 5

A field force due to gravitational attraction between two objects, generally Earth and an object.

Question 6

Friction F
f
(Direction)

Answer 6

Parallel to the surface and opposite the direction of sliding.

Question 7

Normal F
N
(Direction)

Answer 7

Perpendicular to and away from the surface

Question 8

Spring F
sp
(Direction)

Answer 8

Opposite the displacement of the object at the end of the spring

Question 9

Tension F
t
(Direction)

Answer 9

Away from the object and parallel to the string, rope, or cable at the point of attachment

Question 10

Thrust F
thrust
(Direction)

Answer 10

In the same direction as the acceleration of the object, barring any resistive forces

Question 11

Weight F
g
(Direction)

Answer 11

Straight done forward the center of Earth