Vocabulary
Push or Pull
Force
The total amount of force acting upon an object is known as
Net Force
One morning I was walking Lucy. Lucy saw a squirrel and started pulling with a force of 50 N to the right. I was holding Lucy’s leash. The forces were balanced. How much force was I used to hold Lucy’s leash and in which direction?
50 N to the left
You’re riding on the bus to school, and suddenly the bus driver slams on the brakes. Your body continues in the same forward motion while the bus stops. The tendency to resist a change in an object's motion is
inertia
Tell me a scenario that shows newtons first law of motion
.....
When two surfaces rub against each other, the force that one surface exerts on the other
Friction
What is Newton's First Law of Motion?
An object at rest will stay at rest unless an unbalanced force moves it. An object in motion will stay in motion unless an unbalanced force stops it
Two students were playing tug of war. Jane was pulling with a force of 35N to the right and Tyler was pulling with a force of 20N to the left. What is the net force?
15 N
When an object is at rest, what is its speed?
0 m/s2
Tell me a scenario that shows newtons second law of motion
......
When an object is pulled to the Earth, this force is known as
Gravity
What is Newton's second law of motion
F=MA
The more mass an object has the more force is needed to accelerate it.
What force is needed to accelerate a car with a mass of 25 kg at a rate of 2.0 m/s 2?
50 N
Newton’s 1st law of motion states that an object stays at rest unless a(n) ____ acts on it.
unbalanced force
Tell me a scenario that shows newtons third law of motion
......
An object will start to accelerate because an _______ was applied.
unbalanced force
What is newton's third law of motion
For every action, there is an equal but opposite reaction.
What is the acceleration of an object that has a mass of 30 kg and a force that is being applied with 15N?
2 m/s2
During the pushchair station activity, the object with the most mass-made you apply the greater ____.
force
If an object that is moving suddenly stops, what is acting on it?
an unbalanced force
________ are equal in size and opposite in direction
balanced forces
What is the first law known as?
What is the second law known as?
1) Inertia
2) Acceleration
What is the mass of an object that is accelerating at a rate of 56 m/s2 and a force that is being applied with 7N?
8kg
Why is it harder to push a cart filled with groceries than it is to push an empty cart?
The mass of the cart with groceries is greater than the mass of the empty cart.
A person in a head-on car collision who is not wearing a seat belt continues to move forward at the original speed of the car because of ____
inertia