FLM
How many centimeters in a meter?
100 cm
What is the difference between distance and displacement?
Distance measures the path length only
Displacement measures the distance and direction between the starting and stopping points.
If an object is at rest, what can you say about the forces acting on it?
The forces must be balanced.
What is the unit for energy?
Joules (J)
What is the charge of an electron
Negative
To cancel units, the same unit must be on ___________.
The opposite side of the fraction
What is the difference between speed and velocity?
Speed uses distance and is a scalar quantity.
Velocity uses displacement and is a vector quantity.
If an object is moving at a constant velocity, what can you say about the forces acting on it?
The forces must be balanced.
What must be true if an object has no kinetic energy?
The object is not moving.
What is the name of a material that DOES NOT allow current to flow easily?
Insulators
How many cm is 1.24m?
124cm
The slope of a position vs. time graph is equal to ___________.
The velocity of the object.
If the mass of an object increases, but the net force remains the same, what would happen to the acceleration?
What is the definition of work?
The transfer of energy.
What type of force would occur if two positive charges were placed near each other.
Objects would repel.
How many seconds are in a day?
1 day = 24 hr
1 hr = 60 min
1 min = 60 s
86400 s
What are the 3 ways that an object could accelerate?
Speed up, slow down, change direction
What is the force of gravity acting on an object known as?
Weight
Climbing stairs slowly requires less power than climbing stairs quickly. Explain why.
As time increase, power decreases.
P= W/t
If an object gains a charge, which subatomic particle moves?
Electrons
How many quarts is 2 L of diet Coke?
1 pint = 2 cups
2 L = 1000 mL
1 quart = 2 pints
236.59 mL = 1 cup
2.11 quarts
A car is driving at a velocity of 50m/s. After 10 seconds, the car's velocity is 40 m/s. What is the acceleration of the car?
a = 40-50/10
a = -1m/s (or 1 m/s in the opposite direction)
According to Newton's 3rd law, what is the force-pair of the following force? The Earth pulls doen on a book.
The book pulls up on the Earth.
What happens to the energy that an object has if it falls, hits the ground, and stops moving?
It is transferred into its surroundings and becomes thermal energy.
What types of material makes a good conductor?
Metals (gold, copper, silver)