Created by Leann McLeod
over 7 years ago


Question  Answer 
What are micrometer screws used for?  Measuring very small Distances 
What is the difference between speed and velocity?  Velocity is the measure of speed in one direction. Speed is how much distance travelled in a certain amount of time. Velocity is a vector quantity whereas speed is a scalar quantity 
What is the gradient in a distancetime graph?  Speed 
What is the gradient in a speedtime graph?  acceleration 
What is deceleration?  Negative acceleration 
Describe the motion of a falling object, taking air resistance into consideration (EXAMPLE: a ball falling)  1. As the ball starts to fall, the ball is gaining speed 2. After a while, the ball will reach its terminal velocity. At this point, the downward force is the same as the upward air resistance 
What is a Moment?  A turning force 
Describe the behavior of the moments when e.g. a seesaw is in equilibrium  In an equilibrium seesaw both moments are equal which means a resultant force of 0. Therefore the seesaw is in equilibrium. 
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