Newtons first law of motion ( inertia )
What is inertia
inertia is the tendency of an object to resist a change in its motion
What are 3 ways to write the formula for newtons second law
F=m x a
M=f / a
A=f / m
Newton's third law of motion states
for every action there's an equal / opposite reaction
What would it take to force the object to move?
An UNBALANCED, EXTERNAL force.
The mass of a young elephant is 100 kg. How much force would be required to accelerate the elephant at a rate of 3 m/s?
300 N
A hammer interacts with a nail which object exerts a force on which?
Each exerts a force on the other
An object is sliding with a velocity of 10 m/s along a perfectly frictionless surface. Instantly, a 45 N force acts upon the object. Based on your knowledge of Newton’s 1st Law, what do you think will happen? Will the object remain in motion or will its motion change? If the motion changes, what kind of change occurs?
Since an unbalanced, external force is present, the object will NOT continue in its current motion state. It will slow down because the unbalnced force causes it to accelerate in opposite direction than it was moving.
A rock with a mass of 50 kg rests on the floor. Assuming that there are no other external forces acting, it exerts a force on the floor of ...
50 N
Is firing a cannon an example of the third law (Why or why not?) ?
Yes, when a cannonball is shot from a cannon, the cannon puts a force on the cannonball that propels it forward. In the backward direction, the cannonball exerts an equal force on the canon.