Forces
A push or pull
What is Force
No change in motion
Uniform motion
What object would be harder to stop? A speeding car or a man on a motorcycle?
A speeding car because the car has more mass.
Unit of measurement for force
Newtons ( N )
The two types of forces :
What is Contact force and Non Contact Force
The rate at which the speed or the direction of motion of an object changes over time
Acceleration
An object in motion stays in motion unless another force acts at it. An object in rest stays at rest.
Newton's FIRST Law
What is the formula for force?
Force = Mass x Acceleration
A force that acts at a distance
The tendency to resist any change in motion
Inertia
Newton's Second Law States : The greater the force, the _______________ the change in motion
The greater the change in motion.
An object in motion will keep the same ____________
and ______________
Speed and Direction.
A force that requires a touch
Contact Force
Air Resistance
Newton's Second Law States : The greater the mass, the ______________ the change in motion.
The smaller the change in motion.
TRUE OR FALSE? A large force will not produce more acceleration than a small force acting on the same object.
FALSE; A large force will produce the more acceleration than a small force acting on the same object.
Attraction between any two objects
Gravity
True or False; An object that changes direction is still in uniform motion if it's moving at the same speed
Newton's third law states that Forces are ______________ in strength and _______________
in direction
What is the force of an object that weighs 5kg and is moving at 10 miles/per hour?
Answer : 50 Newtons
Force = mass x acceleration
50 = 5 x 10