# GCSE 2 - Forces and Motion Flashcards Preview

## Physics > GCSE 2 - Forces and Motion > Flashcards

Flashcards in GCSE 2 - Forces and Motion Deck (15)
0
Q

How do you find distance and acceleration in a speed-time graph?

A

The distance is the area under the graph.

The slope represents acceleration. A steep slope means high acceleration, a horizontal line means no acceleration.

1
Q

How do you find speed and acceleration on a distance-time graph?

A

A straight gradient means no acceleration, curving up is acceleration and curving down is deceleration.

2
Q

What is the difference between speed and velocity? H

A

Velocity is speed in a particular direction. It is therefore possible to have a negative velocity.

3
Q

What is the resultant force?

A

The overall force on an object which moves it in a particular direction.

4
Q

What happens if a resultant force acts upon a moving object?

A

The object will speed up or slow down.

5
Q

What happens when a resultant force acts upon a stationary object?

A

The object will speed up.

6
Q

What happens when the forces are balanced on a stationary object?

A

The object remains stationary.

7
Q

What happens when the forced are balanced on a moving object?

A

The object moves at a constant rate.

8
Q

What is the difference between mass and weight? How do you go from one to the other?

A

Weight is a downwards force (N) while mass is the matter an object is made of (kg).
Weight = mass x gravity (10 on Earth)

9
Q

What is terminal velocity?

A

Terminal velocity is the maximum constant speed which an object can reach on gravity alone.

10
Q

What is inertia?

A

Inertia is a body’s ability to resist movement.

A large, fast object will resist slowing down, while a small light object will easily move.

11
Q

What is Newtons First Law?

A

An object at rest, stays at rest. An object in motion carries on travelling at the same speed and in the same direction unless acted upon by an unbalanced force.

12
Q

What is Newtons Second Law?

A

The acceleration of an object is directly proportional to the resultant force and inversely proportional to the mass.

13
Q

What is Newtons Third Law?

A

When object A puts a force on object B, object B puts an equal and opposite force on object A

14
Q

How are GE and KE linked?

A

As GP decreased, KE increases. When one is at its maximum, the other is at its minimum.