Defining Force

Question 1

Bending

Answer 1

When an object bends, the concave side has tension because it is being stretched while the concave side is being compressed smaller

Question 2

Center of Mass

Answer 2

Point on the object where mass is (usually centre of object)

Question 3

Center of Gravity

Answer 3

Point in a system or object where gravity acts

Question 4

Compression

Answer 4

object becoming compacted due to pressure/ force

Question 5

Contact Force

Answer 5

any force that required direct application in order to be enforced

Question 6

Deformation

Answer 6

the action or process of changing in shape or distorting, especially through the application of pressure

Question 7

Dynamograph

Answer 7

An instrument for recording the degree of muscular force

Question 8

External Force

Answer 8

a force that is applied to a system from an outside source

Question 9

Force

Answer 9

A push or pull (with the intent of producing motion)

Question 10

Force Platform

Answer 10

instruments that measure the ground reaction forces generated by a body standing on or moving across them

Question 11

Friction

Answer 11

is the resistance that another object experiences from sliding over the surface of another object

Question 12

Gravity

Answer 12

Force of gravity: the amount of force an object feels due to the mass of earth pulling down on it
Acceleration due to gravity: the acceleration a body has under the gravitational effect of the earth

Question 13

Kinetic Friction vs Static Friction

Answer 13

The Force of Static Friction keeps a stationary object at rest! Once the Force of Static Friction is overcome, the Force of Kinetic Friction is what slows down a moving object!

Question 14

Kinetics vs Kinematics

Answer 14

Kinetics is the study of the forces that produce movement while Kinematics is the study of describing movement

Question 15

Non-Contact Force

Answer 15

The force which acts on an object without coming physically in contact
(Ex. the force of gravity)

Question 16

Strain Gauge

Answer 16

a device used to measure strain on an object

Question 17

Tension

Answer 17

when an object (like a string) is pulled tight

Question 18

What kinds of forces do humans often encounter when: running, playing football, etc.?

Answer 18

We are always experiencing the force of gravity. If we are outside, there may be the force applied by the wind. There is the friction force from the ground. There is the reaction force from the ground pushing back up on you. If you run into something there will also be the reaction force from that thing back onto you.

Question 19

Explain how muscular forces create movement?

Answer 19

Muscles contract and produce a force that will move your bones and produce movement. When you move a muscle, the force of this movement passes from the muscle through its associated tendon. The tendon uses this force to initiate movement of the connected bone and associated joint.

Question 20

Can an object be in motion if no external forces act on it?

Answer 20

No

Question 21

Can external forces act on an object an not cause acceleration?

Answer 21

Yes, as long as the object is already moving, the forces that are causing it to move can produce a constant velodcity

Question 22

Explain how the force of friction changes when a force is applied to a system

Answer 22

if you apply more force to on object, the force of friction will increase in order to keep the object in place. Friction will never be more than the applied force because then it would result in the object moving