Forces Vocab
Forces Random
Forces Measurements
Forces Description
Forces Problems
100
A force that opposes motion
Friction
100
F= ma - whose Law is this?
Isaac Newton
100
Mass is measured in?
Kilograms (kg)
100
What is the description of gravity?
Earth's pull on an object directed at the center of the earth.
100
An object has a mass of .25 Kg. What is the weight of the object?
2.45 N
200
What is the rate of change of velocity?
Acceleration
200
Which one is the odd one out? Normal, Kinetic, Friction, Gravitational.
Kinetic
200
Acceleration is measured in?
m/s2
200
What is another name for an object's tendency to resist change?
Inertia
200
What is the minimum Force to move a 25kg crate if the coefficient of static friction for the surface is 0.8?
196N
300
What force keeps the Earth in orbit?
Gravity
300
How many objects are required for a Force to occur?
2
300
Weight is measured in?
Newtons (N)
300
What is the description of Push/Pull?
An applied force to an object by something or someone.
300
A 3kg object initialing traveling at 5m/s, slows to a stop in 2 seconds. What is the force of friction acting on it?
-7.5N
400
What force is caused by gravity acting on a mass?
Weight
400
What do we know about the future motion of this object?
The object will accelerate to the right.
400
What is the equation for weight?
Fg=mg
400
What is the description of Normal Force?
Contact force from the surface, perpendicular 90 degrees.
400
A 4kg object rests on a horizontal floor with a coefficient of static friction = 0.9 and coefficient of kinetic friction = 0.5.
What will be the friction force if 32N is applied to the object?
32N (Same as Force applied!)
500
What is Earth's gravity?
9.8m/s2
500
Describe in words, Newton's 2nd Law.
Net Force is directly related to acceleration.
mass is inversely related to acceleration.
500
What are all forces measured in?
Newtons
500
What possible scenarios can arise when an object is in equilibrium? (must include all to be correct)
1) an object in motion but moving at constant velocity.
2) an object at rest.
500
A 2kg object rests on a horizontal floor with a coefficient of static friction = 0.7 and coefficient of kinetic friction = 0.3.
What will be the acceleration if 15N is applied to the object?
a = 4.56m/s2