Density/Graphs
The formula for density is ...
mass / volume
the change of distance over time an object travels is
Speed
If a 25kg box is being held at 25m, how much work is performed?
0J
The unit of measurement for force is..
Newtons
In order, the three laws of motion are..
Law of Inertia, Law of force and acceleration and law of action-reaction
If volume needs to be solved for, how is the problem set up?
mass/density
What are the three situations an object undergoes acceleration?
Increase speed, decrease speed and/or change direction
If distance needs to be solved for, how is the problem set up?
Work/Force
If force is increased on an object, what happens to the objects acceleration?
Increases
If Student A is pushing on the left side of the box with a force of 75N and Student B is pulling on the right side of the box with a force of 50N, what is the net force acting on the box?
125N
If a time vs. distance graph shows a flat line, the object is...
at rest
An object traveling 10 m/s north is best described as...
Velocity
One person is using 6N to carry a box up 2 meters. Another person is using 3N to walk up a 4 meter incline. Who is performing more work?
Neither. They are the same amount of work
Occurs when multiple forces acting on an object cause the object to increase or decrease speed
Unbalanced force
A car going 65 mph slows down to exit the highway is an example of ....
acceleration
If a velocity vs. time graph shows a flat line, what is the object doing?
traveling at a constant speed
If a skateboarder jumps off his skateboard towards the northeast, his skateboard will travel in which direction?
Southwest
Josh is using 25 Joules of work to move a 5 kg box over a distance of 10 meters. What is the amount of force he is applying?
2.5 Newtons
If a spacecraft has a mass of 500kg and an acceleration of 4 m/s2, what is the force?
2000N
State the complete first law of motion.
An object at rest will stay at rest or an object in motion will stay in motion until an unbalanced force is acted on it.
A piece of aluminum occupies a volume of 15.0 mL and weighs 40.5 g. What is its density? Will it sink or float in water?
2.7 g/mL and SINK
If a 7000kg car has been traveling 275 miles over 5 hours to Austin, Tx. What is the car's velocity?
55 m/hr north
A 250 kg box performed 1.5 J of work over 7 meters. What is the amount of force used?
0.21 Newtons
If a 0.60kg soccerball is accelerated with a force of 10.8N. What is the acceleration?
18 m/s2
List the four energy transformations from beginning to end in the picture.
potential energy -> kinetic energy -> mechanical energy -> electrical energy