Newton's 1st Law
Newton's First Law
This law says that force, mass, and acceleration are mathematically related.
Newton's Second Law
This law says that for every action, there is an equal and opposite reaction.
Newton's Third Law
The unit used to measure mass when using Newton's Second Law.
kilograms (kg)
An object with a mass of 5 kg is pushed and accelerates at 2 m/s2. What is the force applied to the object?
10 Newtons (N)
The ease with which an object can change its motion.
Inertia
This formula is used to describe Newton's 2nd Law.
Force = mass times acceleration
True
The unit used to measure force when using Newton's Second Law
Newtons (N)
An object is pulled with a force of 55 Newtons (N). It has a mass of 5 kg. What is the object's acceleration?
11 m/s2
In order for an object that is moving at a constant velocity to change its motion, it needs to be acted on by an _____________________ force.
Unbalanced
This formula is a version of Newton's 2nd Law that allows you to solve for acceleration.
Acceleration = Force / mass
A bowling ball hits the last pin left standing in the bowling lane. Identify the action force and the reaction force.
Action force - Force of bowling ball on pin
Reaction force - Force of pin on bowling ball
This scientist proposed a set of laws that were able to explain motion on Earth and in space.
Isaac Newton
An object accelerates at 9.8 m/s2 after being pulled with a force of 98 N. What is the mass of the object?
10 kg
TRUE OR FALSE: Only balanced forces can cause acceleration.
False - Only unbalanced forces can cause acceleration.
This formula is a version of Newton's 2nd law that allows you to solve for mass.
Mass = Force / acceleration
A hammer is used to hit a nail into a wall. Identify the action force and the reaction force.
Action force - Force of hammer on nail
Reaction force - Force of nail on hammer
A statement that describes a cause-and-effect relationship in the universe and is based on repeated experimental observations.
Scientific Law
An object is pushed to the left with a force of 100 N, and pulled to the right with a force of 75 N. It accelerates at a rate of 5 m/s2. What is the mass of the object?
5 kg
When an object is in motion and an unbalanced force acts on it, the object will change ______________ and/or ________________.
Speed and/or direction
TRUE OR FALSE: If two objects have the same mass, the object that you push harder will accelerate slower.
False - More force = greater acceleration
Another term to describe "action and reaction forces" is ____________ _____________.
Force pairs
What force is always acting on every object that is on Earth?
Gravity
An desk is pushed by one student with 15 N and pulled in the same direction by another student with 20 N of force. The desk has a mass of 70 kg. What is the acceleration of the desk?
0.5 m/s2