P9 Flashcards
What is the formula for Speed?
Speed (m/s) = Distance (m) / Time (s)
What is the formula for Acceleration?
Acceleration (m/s^2) = Change in Velocity (m/s) / Time Taken (s)
What is Newton’s Second Law?
The acceleration of an object is:
a. Directly proportional to the resultant force on the object.
b. Inversely proportional to the mass of the object.
What is the formula for Force?
Force (N) = Mass x Acceleration
What is Inertia?
The tendency for an object to stay at rest or to continue at constant velocity.
What is the formula for Weight?
Weight = Mass x Acceleration of Gravity
W = m x g
What is Terminal Velocity?
The maximum velocity an object .can travel at in a fluid
What is Stopping Distance?
The DISTANCE it takes for an object to stop (NOT TIME).
What is Thinking Distance?
The distance travelled between the time the driver realises they need to brake and actually braking.
What is Braking Distance?
The distance taken to stop once the brakes are applied
What is Momentum?
A property of a moving object which depends on how much mass the object has and how fast it is moving.
What is the formula for Momentum?
Momentum = mass x velocity
p = m x v
What is an Elastic object?
An object which resumes its normal shape when the forces deforming it are removed.
What is Compression?
When a force is exerted on an object, it is compressed.
What is Tension?
When a force pulls on the object, it is in tension.
