Newton's first Law
Another name for Newton’s first law is ___
The law of inertia
What is the equation for finding acceleration applying Newton’s second law?
A=F/M
According to Newton’s third law of physics, all forces come in ___
Pairs
A dog walker is holding back three dogs on a leash. If each dog pulls with a force of 65 newtons, how much force does the woman have to exert to keep her and the dogs from moving? Hint: statics problem.
195 N
A push or pull, or any action that has the ability to change an object’s motion is a ____
Force
The net force is known as the __
Total force
If you know the strength of the action force, then you also know the strength of ____
The reaction force
A cart rolls down a ramp. Using a spring scale, you measure a net force of 3 newtons pulling the car down. The cart has a mass of 500 grams (0.5 kg). Calculate the acceleration of the cart.
6 m/s2
The larger the mass the smaller the inertia. T/F
False
The M in A=F/M stands for meters T/F
False: This is because inertia is a property of mass and mass is where inertia comes from. The larger mass the larger the inertia and thus the smaller the mass the smaller the inertia
when stepping onto any surface on earth sets off a continuous chain of action and reaction forces that can be followed down to the earth’s core T/F?
True
If a block is being pushed by three people exerting -30 Newtons of force and the other side of the block is being pushed by two people each exerting 25 Newtons of force, what is the net force of the object?
40 Newtons
How does the inertia of a 200-kg object relate to the inertia of a 400-kg object?
The 400-kg object will have a larger mass than the 200-kg object because the mass relates to the inertia.
The condition of zero acceleration is called the ___
equilibrium
A person pushes on a heavy cart with 140 N of force, what is the reaction force of the cart onto the person?
140 N of force
A cart is being pulled from two opposite sides. On the left side of the cart, two people pull with -140 N each. On the right side of the cart three people pull with a force of 96 N each. What is the Net force of the cart?
8 Newtons
Newton’s first law of motion states that ___
An object will continue indefinitely in its current state of motion, speed, and direction unless acted upon by a net force
Newton’s second law of motion states that ___
the acceleration of an object depends upon two variables – the net force acting on the object and the mass of the object
Newton’s third law states that ___
For every action force there has to be a reaction force that is equal in strength and opposite in direction
On Mercury, a person with a mass of 75 kg weighs 280 N. What is the acceleration due to gravity on Mercury?
3.7 Meters per second