Describing Motion

Question 1

What is Physics?

Answer 1

Physics studies matter, motion, forces, and energy through space and time.

Question 2

What is Distance?

Answer 2

Is how far an object travels in total

Question 3

What is displacement?

Answer 3

Describes the net distance and direction travelled from start point to finish point

Question 4

What are Scalars?

Answer 4

Are quantities that can be full described by their magnitude (size).

Question 5

What are vectors?

Answer 5

Are quantities that have a direction as well as a magnitude.

Question 6

Examples of Scalars

Answer 6

• Distance
• Mass
• Energy
• Speed

Question 7

Examples of Vectors

Answer 7

• Acceleration
• Velocity
• Displacement
• Force

Question 8

What is Average Speed?

Answer 8

The average speed of an object shows us how far an object moves in a certain time

Question 9

What is Instantaneous Speed?

Answer 9

Would be the speed any given instant within that span of time, measured with a speedometer.

Question 10

What is speed?

Answer 10

The rate the rate at which the distance of an object is changing

Question 11

What is velocity?

Answer 11

Is the rate at which displacement of an object is changing. Velocity includes direction.

Question 12

What is Acceleration?

Answer 12

Is the rate of change of velocity. It can be positive or neagative.

Question 13

What can negative acceleration be?

Answer 13

Deceleration- slowing down
Speeding up in a negative direction- reversing

Question 14

What are contact forces?

Answer 14

They are applied directly to the body through physical contact. When the contact ceases so does the force.

Question 15

What are examples of contact forces?

Answer 15

hitting a ball, collision

Question 16

What is a non- contact force?

Answer 16

It is applied without direct contact. The force never ceases to act upon the body, no matter how small the force is or becomes.

Question 17

What are the effects of Forces?

Answer 17

• Change of object’s speed
• Change of object’s direction
  -Change of object’s shape

Question 18

What is a force?

Answer 18

Is a push or pull of an object. It is a vector quanitity.

Question 19

What are examples of a non-contact force?

Answer 19

Magnetism, electrical forces

Question 20

What is the net force?

Answer 20

It is a combined effect of all the forces acting on an object.
If the forces are in the same direction, magnitudes are added.
If they are in the opposite direction, magnitudes are subtracted.

Question 21

What is a balanced force?

Answer 21

They are described as balanced when the net force is equal to 0N. The object will remain motionless or travel at a constant velocity.

Question 22

What is an unbalanced force?

Answer 22

They are described as unbalanced when the net force is greater than zero in a given direction

Question 23

What is Newton’s first Law?

Answer 23

Every object continues in a state of rest or constant velocity unless acted upon by an unbalanced force.

Question 24

What is Inertia?

Answer 24

Without an unbalanced force acting on an object, they will continue to do what they are doing forever.

Question 25

What is Newton’s second law?

Answer 25

The acceleration of an object is dependent upon two variables. - The size of an unbalanced force and the the mass of an object

Question 26

What is Newton’s third law?

Answer 26

For every action, there is an equal and opposite reaction.
These forces must be:
Equal in magnitude
Opposite in direction
Be same nature (two push forces)
Act on different objects