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Edexcel GCSE Physics
Topic 9: Forces and Their Effects
9.1 Forces and Motion
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Cards (81)
Non-contact forces
act without direct physical contact.
True
The acceleration of an object is directly proportional to its mass.
False
Arrange the following terms in order from their fundamental concepts to their definitions:
1️⃣ Position
2️⃣ Velocity
3️⃣ Acceleration
Velocity includes both speed and
direction
Match the type of force with its example:
Contact Force ↔️ Friction
Non-Contact Force ↔️ Gravity
What is the unit for acceleration?
m/s²
Friction is a contact force that opposes
motion
What does the conservation of momentum state for a closed system?
Total momentum remains constant
Match the concept with its definition and units:
Momentum ↔️ Product of mass and velocity, kg·m/s
Velocity ↔️ Rate of change of position, m/s
Force is a scalar quantity.
False
Non-contact forces act through
fields
.
What is the formula for Newton's Second Law?
F
=
F =
F
=
m
a
ma
ma
What is the formula for velocity?
v
=
v =
v
=
Δ
x
Δ
t
\frac{\Delta x}{\Delta t}
Δ
t
Δ
x
What is the unit of net force?
Newtons (N)
How do you calculate the net force acting on an object?
Add individual forces
What is the unit of net force?
Newtons
Newton's Second Law states that net force causes
acceleration
.
True
Gravitational force is the force of attraction between two objects with
mass
What is the approximate value of acceleration due to gravity on Earth?
9.81 \, \text{m/s}^2</latex>
Static
friction
opposes the initial motion between stationary surfaces.
True
What is momentum defined as?
Product of mass and velocity
In a displacement-time graph, the slope represents the
velocity
of the object.
The area under an acceleration-time graph represents the change in
velocity
Friction is an example of a
contact
force.
A car at rest will remain at rest unless acted upon by an unbalanced
force
.
What does the slope of a displacement-time graph represent?
Velocity
The area under a velocity-time graph represents the object's displacement.
True
Contact forces require direct physical
contact
Newton's first law is also known as the law of
inertia
An object in motion will stop immediately unless acted upon by an unbalanced force.
False
What is the unit for acceleration?
m/s²
What are the two main types of forces?
Contact and non-contact
Acceleration is inversely proportional to
mass
.
True
What is the acceleration due to gravity in freefall without air resistance?
9.81 m/s²
Momentum is the product of mass and
velocity
.
True
The formula for momentum is
p
=
p =
p
=
m
v
mv
m
v
.
True
The conservation of momentum explains the recoil of a
gun
Give an example of a contact force.
Friction
Newton's First Law is also known as the
Law of Inertia
.
True
Match the concept with its definition, units, and formula:
Velocity ↔️ Rate of change of position, m/s,
v
=
v =
v
=
Δ
x
Δ
t
\frac{\Delta x}{\Delta t}
Δ
t
Δ
x
Acceleration ↔️ Rate of change of velocity, m/s²,
a
=
a =
a
=
Δ
v
Δ
t
\frac{\Delta v}{\Delta t}
Δ
t
Δ
v
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