5.1 forces and their interactions

Question 1

What is a scalar quantity?

Answer 1

A quantity that only has a magnitude

Question 2

What is a vector quantity?

Answer 2

A quantity that has both a magnitude and
an associated direction.

Question 3

How can a vector quantity be drawn and
what does it show?

Answer 3

● As an arrow
● The length of the arrow represents the
magnitude
● The arrow points in the associated
direction

Question 4

What is a force?

Answer 4

A push or pull acting on an object due to
an interaction with another object.

Question 5

What are the two categories that all
forces can be split into?

Answer 5

1. Contact forces (objects touching)
2. Non-contact forces (objects separated)

Question 6

Give three examples of contact forces.

Answer 6

1. Friction
2. Air resistance
3. Tension

Question 7

Give three examples of non-contact
forces

Answer 7

1. Gravitational forces
2. Electrostatic forces
3. Magnetic forces

Question 8

Is force a vector or a scalar quantity?

Answer 8

● Vector

Question 9

Give three examples of vector quantities

Answer 9

1. Velocity
2. Displacement
3. Force

Question 10

Give three examples of scalar quantities

Answer 10

● Temperature
● Time
● Mass
● Speed
● Distance
● Energy

Question 11

What is weight?

Answer 11

The force that acts on an object due to
gravity and the object’s mass.

Question 12

What quantities does weight depend on

Answer 12

gravity
objects mass

Question 13

What is the unit used for weight?

Answer 13

N

Question 14

WHAT IS AN OBJECTS CENTER OF MASS

Answer 14

object’s
weight can be considered to act through

Question 15

What piece of equipment can be used to measure an
object’s weight?

Answer 15

newtonmeter.

Question 16

What is the name given to the single force that is
equivalent to all the other forces acting on a given
object?

Answer 16

RESULTANT FORCE