Newtons First Law
Another name for Newtons First law
What is the law of Inertia?
What is another name for Newton's Second law
The law of force and acceleration
Another name for Newtons third law is
The Law of Action and Reaction
The force exerted by the earth by an object is called _________ of the object
Weight
Explain why heavier objects require more force than lighter objects to move or accelerate them.
( Include which law this statement applies to )
Something with more mass moving at the same acceleration as a lighter object would require more force to change its speed or change its direction.
( Newtons Second Law )
An object at rest will stay at rest until
Another force is acted upon it
The formula for force is
F=ma
Newton's third law states that for every action in nature
There is an equal and opposite reaction
Force which is applied to an object by another object
Applied force
When an object is at equilibrium it is
A. Balanced
B. Unbalanced
B. Unbalanced
An object will only accelerate if what is applied to it?
An unbalanced or external force
According to Newton's second law, what is the acceleration of an object dependent on?
The net force, and mass
Recoil is a form of Newtons 3rd law
True or False
Name the Force that resists the sliding or rolling of one solid object over another, always opposes the motion
Friction Force
Find the force of an object with 8 kg and 3 m/s²
24 N
1. Imagine a place in the cosmos far from all gravitational and frictional influences. Suppose that you visit that place (just suppose) and throw a rock. The rock will
a. gradually stop.
b. continue in motion in the same direction at constant speed.
B. According to Newton's first law, the rock will continue in motion in the same direction at a constant speed.
N/Kg is equal to
m/s^2
Whenever object A exerts a force on object B, object B exerts a force of the same magnitude on object A, but in the opposite direction.
is this
a) Always true? b) Sometimes true? c) Never true?
A) Always true
The force exerted by a compressed or stretched spring upon any object that is attached to it.
Spring Force
How many of Newtons Laws affect the game Tug-Of-War
All three
This tendency to resist changes in a state of motion is called
Inertia
If there is a block of mass 2kg, and a force of 20 N is acting on it in the positive x-direction, and a force of 30 N in the negative x-direction, then what would be its acceleration?
F(net)= 20N-30N = -10N
1. While driving down the road, a firefly strikes the windshield of a bus and makes a quite obvious mess in front of the face of the driver. This is a clear case of Newton's third law of motion. The firefly hit the bus and the bus hits the firefly. Which of the two forces is greater: the force on the firefly or the force on the bus?
Each force is the same size. For every action, there is an equal ... (equal!). The fact that the firefly splatters only means that with its smaller mass, it is less able to withstand the larger acceleration resulting from the interaction.
Force is measured in the unit called
Newtons
What is the acceleration of a 50 kg object pushed with a force of 500 Newtons?
: 10m/sec²