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What is the 1st law of motion?
Inertia
Acceleration is caused by a force acting on a mass.
Newton's Second Law of Motion
3rd law
law of action reaction
Who was the creator of the three laws of motion?
Sir Isaac Newton
What is the formula for acceleration
a=F/m
What is the formula for mass?
m = F / a
It is the amount of matter an object or body has
mass
If you exert a net force of 8 N on a 2-kg object, what will its acceleration be?
4m/s^2
The SI unit of this quantity is Newton (N), named after the scientist Sir Isaac Newton
Force
for every action, there is an equal and opposite reaction
law of interaction
How does Newton’s third law explain how a rocket takes off
The hot gasses move in one direction, while the rocket moves in the opposite direction but with equal force.
Forces always act in equal and opposite pairs.
Newtons 3rd law
A ski sliding exerts a force on the ice surface and the rider exerts a force on the ski.
False
Name the three laws of motion.
law of action reaction
law of inertia
law of acceleration
A glass of water exerts a force on the top of the table and the table exerts a force on the glass.
True
When the velocity of an object changes at a constant rate, what is the movement?
uniformly accelerated motion
Steven drops a stone from the top of a cliff. If the stone’s mass is 18 kg and it accelerates down at a rate of 9.5 m/s^2, what is the weight of the stone?
171 N
It refers to the rate of change in the velocity of a body per time interval
Acceleration
When an object moves at a constant speed, the movement is?
uniform motion
Another term for action and reaction
law of interaction
A 500 N force was used to toss a 25 kg object up in the air. What is the magnitude of the acceleration of the object?
20 m/s^2
Characteristic of Action-reaction pairs
1. equal magnitude
2. acting in opposite directions.
3. acting simultaneously.
4. acting on two different objects
The branch of Physics that deals with the study of the description of motion
Kinematics
What do you called the movement, when an object moves at a varying speed?
variable motion
How much force is needed to accelerate a 55 kg object at a rate of 5 m/s2
275 N