Physics Yr10
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36 Terms
What is constant speed?
When an object moves at the same speed
What is a force?
A pull or push on an object that changes the object’s speed, direction or shape.
What is force measured in?
Newtons
What is the formula for finding speed?
V=d/t
What is the formula for finding force?
F=ma
What is the unit for time?
s
What is the unit for distance?
m
What is the unit for speed?
m/s
What is friction?
Opposing force to motion on the object
What is net force?
The total sum of all the forces on the object
What direction does F weight (gravitational force) go?
Down
What is deceleration?
When an object is slowing down
When is a force unbalanced?
When the forces are unequal
What is mass measured in?
kg
What is buoyancy
The supporting force in water.
If there is a thrust force of 10N and a drag force of 3N, what is the net force?
7N
If there is a thrust force of 20N and a drag force of 7N, what is the net force?
13N
What is the unit for acceleration?
m/s/s
If a 2kg object accelerates at 1m/s/s, what force would be used to push the object?
2N
What is weight force?
The downward force on an object as a result of gravity.
What is drag?
Opposing force to motion (fluids eg. water and air)
What is thrust?
Mass is accelerated into one direction causing the object to be propelled in the opposite direction.
What is lift?
Opposing support force to weight in air
What are support forces?
Support, buoyancy, lift
What are push forces?
Push, thrust
What are friction forces?
Friction, drag, air resistance
What are non-contact forces?
Gravitational, electromagnetic, nuclear
What creates more friction?
Rough surfaces
Friction causes:
Kinetic energy to be transformed into heat energy.
What does horizontal straight line show on a distance/time graph?
Stationary
What does horizontal straight line show on speed/time graph?
Constant speed
What does horizontal straight line resting on the x axis show on a speed/time graph?
Stationary
What does diagonal straight line show on a distance/time graph?
Constant speed
What does upward curved line show on a distance/time graph?
Acceleration
What does a downward curved line show on a distance/time graph?
Deceleration
What does the gradient show on a speed/time graph?
Acceleration