Forces
What is a force?
A push or a pull
Finish this statement:
More mass= More__________
Force
What happens to a moving object if no force stops it?
It will continue to move.
What is speed? How do you calculate it?
Speed measures how fast something is moving.
How do you solve for net force on a diagram?
Add arrows in the same direction, subtract arrows going opposite ways
What object do we use to find the mass of an object?
Triple Beam Balance
What does friction do?
What is slows things down, prevents things from moving?
What is a Newton's 2nd Law
The more force you use, the more an object will move. Heavier objects need more force to move.
Newton's 1st law is known as:
The law of Inertia.
How can I turn this value into velocity? 30mph
Add a direction: ex: 30 mph south
If the forces are the same on both sides of a moving object is it balanced or unbalanced?
Balanced
What is a unit of mass?
Grams or Kilograms
What is gravity?
A force that brings objects down.
What will happen when you use a lot of force to move an object?
It will move faster.
What does "at rest" mean?
Not moving.
S,V,A?
The car turned the corner.
Acceleration
What is the unit for "force"?
Newtons
What is mass?
The amount of matter in an object. How heavy or light an object is.
Which force SLOWS down a sky diver?
Air resistance.
F=ma
How does using seatbelts in a moving car connect to Newton's 1st law of motion?
Seatbelts help protect you because your body wants to keep doing this during a sudden stop.
Velocity the ________ and _______ of a moving object.
Velocity the speed and direction of a moving object.
<---- ----->
50N. 60N
10N
What is the difference between mass and weight?
Mass is the amount of matter in an object. Weight the way gravity is pulling on an object.
Give one example of friction.
Vary.
Solve this probelm:
You give a shopping cart a shove down the aisle. The cart is full of groceries and has a mass of 18 kg. The cart accelerates at a rate of 3m/s2. How much force did you use to move the cart?
Give one example of Newton's first law
Vary.
How do you calculate speed?
Solve this problem:
<--- <----
25N. 30N
Which direction will the object move?
55N Left
If this person’s mass is 81.6 kg on Earth, how much would their mass be on Mars?
81.6 kg