Forces and motion Flashcards
(15 cards)
Which of these is the best way to measure a force?
Using a force meter!
Forces can be:
Pushes and pulls :)
What is the unit of force called?
The newton, N!
What can we say about the forces on an object that is not moving?
The forces must be balanced :)
What happens to the air resistance on a car as the car goes faster?
it decreases!
A force of 4 N acts on a lever 2 m from the pivot. What is the moment?
6 Nm :)
Gravity is an example of what?
A non-contact force!
what store of energy does friction always produce?
Heat :)
What is an example of an ‘Non-contact Force’?
Gravity or Elasticity!
What is an example of an ‘Contact force’
Frictional Force or Air Resistance :)
When the forces of gravity and water are balanced, an object will do what?
Float!
Complete the statement: gravity will only ever ……
Pull :)
Which of these is measured by newtons?
Weight!
Rubbing two surfaces together will result in what force?
Friction:)
What name is given to the downwards force that all objects use?
Weight!
