Term
What is the equation to calculate speed? 

Definition
speed (m/s) = distance travelled (m)
time taken (s) 


Term
What is the equation that calculates acceleration? 

Definition
acceleration (m/s ) = change in velocity (m/s)
time taken for the change (s) 


Term

Definition
Distance = Speed x Time
Time = Distance
Speed
Speed = Distance
Time



Term
What is the unit of force? 

Definition


Term
What is a resultant force? 

Definition
It is a single force that has the same effect as all of the forces acting on the object.
Eg. When the resultant force is 0, the object is either stationary (if it was at rest) or it continues to move at the same speed and in the same direction if it was already moving
Eg. When the resultant force is not 0, the movement of the object depends on the size and direction of the resultant force. 


Term
What is the equation that links the resultant force, mass and acceleration together? 

Definition
resultant force (N) = mass (kg) x acceleration (m/s ) 


Term
What is the equation for the stopping distance? 

Definition
stopping distance = thinking distance + braking distance 


Term
What is the correct equation for momentum? 

Definition
momentum = mass x velocity 


Term
What is terminal velocity? 

Definition
When the object reaches a constant velocity, as the drag force on it is equal and opposite to its weight.
Eg. Object falls at a steady pace now, so it has reached its terminal velocity 

