Quiz 1 Flashcards
Name the force: gravitational force pulling objects towards the centre of the earth
Weight
How do we find the resultant force when forces do not act in a straight line?
Scale drawing
Forces which require the 2 objects to touch are called
Contact forces
What other unit is a newton-metre equivalent to?
Joule or J
State the name and the power of 10 for this prefix: C
Centi, 10 to the power of -2
Name the force; the force exerted by a rope,string or wire when it’s pulling on something
Tension
When forces are in the same direction, how de work out the resultant force?
Add
Mass, energy and time are examples of what type of quantity?
Scalar
What are the 2 components of a force called?
The horizontal component and the vertical component
An object is in equilibrium when the resultant force acting on it is?
0N
What is a resultant force?
combined effect of all forces acting on an object
When forces are in the opposite direction, how do we work out the resultant force
Subtract
State the unit of force
Newton
How many forces need to be applied to change the shape of a stationary object?
More than one
What does a linear relationship look like on a graph?
A straight line
Name the force: the support force when an object is resting on a surface
Normal reaction
What do we call the point on an object at which we can consider the weight force to act?
The centre of mass
Which is different depending on where an object is in the universe? Weight or mass?
Weight
Force is what type of quantity?
Vector
State the relationship between weight and mass if gravitational field strength doesn’t change
Weight is directly proportional to mass
What is a force?
A push or pull
