Scientific Method
How many miles are in a 5km race?
1 mile = 1.609 km
3.1 miles
What is the equation for density?
Mass/Volume
Variables like velocity and acceleration that have both size and direction are called:
a.vectors.
b.dependent.
c.axes.
d.independent.
A. Vectors
The inertia of an object is related to its:
a.mass and speed.
b.mass and force.
c.mass only.
d.speed only.
C. Mass only
Work may be measure using units of
Joules
The Downward curve of water in a graduated cylinder is called:
Meniscus
What is the density of a metal ring that has a volume of 3.1 cm3 and a mass of 6.0 g?
1.9 g/cm^3
What is the equation that represents the relationship between velocity, distance, and time?
Velocity = Displacement/Time
What is the term for all of the forces acting on an object?
Net forces
Calculate the work needed to push a block with 4 newtons of force a distance of 10 meters.
40 Joules
How many seconds are in 3 days
259, 200 seconds
What is the volume of a box that has the dimensions: 6cm x 2cm x 6cm
72 cm^3
The slope of a position vs. time graph is equal to:
a.distance.
b.speed.
c.acceleration.
d.area.
B. Speed
What is Newton's First Law also known as?
Law of Inertia
What is the equation for Power?
Work/Time
Which variable is what the scientist changes on purpose?
independent variable
A graduated cylinder contains 30 mL of water. You place an object into the cylinder and the water level rises to 52 mL. What is the volume of the object?
22 mL
A rocket sled accelerates from 10 m/s to 50 m/s in 2 seconds. What is the acceleration of the sled?
20 m/s^2
What is the equation for Newton's Second Law?
Force = mass * acceleration
Jake, who weighs 680 newtons, climbs a 6 meter ladder in 8 seconds. What was Jake’s power?
510 Watts
Put the following in order from smallest to largest:
Kilometer, Millimeter, Centimeter, Meter
Millimeter, Centimeter, Meter, Kilometer
A rock displaces 50 mL of water. The density of the rock is 2.5 g/cm^3. What is the mass of the rock?
125 g
Rate at which velocity changes over time
Acceleration
A 20-kg dog on ice skates is accelerating at 2 m/s2. What is the net force on the dog?
40 N
Natalie lifts a 15-kg rock from the ground onto a 1.5 meter high wall. What is the amount of potential energy she has given the rock?
220 Joules