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Kinematics
Kinematics is the study of how a body moves. This includes linear motion, angular motion, and rotational motion.
3,459 Questions
If the speed of an object doubles does its kinetic energy double?
As long as an object is not rotating or otherwise changing its direction of motion, and its velocity is not approaching that of light, the kinetic energy, K, of an object of mass m, and travelling at a speed v, is ½ mv².
K = ½ mv²
Since kinetic energy, in this relation, is directly proportional to mass, doubling the mass also doubles the kinetic energy.
So the kinetic energy is increased by a factor of two.
My bet is on the bowling ball. At 20000 ft the pull of gravity is only marginally smaller than that of the baseball bat at 2 ft above sea leval. Because both have been lifted to their respective hights giving them potential energy, I would keep out of the way of the ball.
What is 1400 RPM converted to in mph?
if an engine runs full speed at 1700rpm and is in top gear which is a one to one ratio, then throo at differential ratio of 5.75;1 the outer circumference of the tyres are 131'' what speed would i be doing please. i also have wheels 0f 128'' if you could kindly help me out many thanks
What are the two factors you need to determine the wave speed?
wave frequencys tell us the number of waves there are on that diagram.
What does a parallel line mean in position vs time graph?
A line parallel to the horizontal (time) axis usually indicates that the radial velocity of the object is zero, that is, the object is not moving towards or away from the origin. The object need not be still since it can be moving at any speed in a transverse direction.
Two parallel lines indicate two objects, at different distances from the origin, gthat are moving at the same radial speed.
How fast would you have to run to run 37 miles in 8 hours?
You would have to maintain a pace of at least 9.54 miles per hour for 6.2 miles.
30 feet per second equals how many kilometers per hour? Solution: There are .3048 meters in 1 foot. Start by multiplying 30 times .3048 = 9.144. There are 1000 meters per kilometer. Then, divide 9.144 by 1000 = .009144. There are 3600 seconds in 1 hour. Finally, multiply .009144 times 3600 = 32.92 (answer!)
At 40 mph you are traveling about 58.667 feet every second.
What is 35 miles per hour converted to feet per second?
75 km per second = 14,763,779.5 feet per minute.
Kinetic energy is the energy a body has because of its mass in motion.
and
Potential energy is the energy a body has because of its position in a gravitational field (- the energy trying to pull it down).
These are two different types of energy but the energy is interchangeable. For instance:-
If you hold a cube of steel 3 feet in the air, it's total energy is its gravitational potential (potential energy).
When you release the cube, this potential energy is converted into movement (kinetic energy).
When it hits the ground it will stop but the kinetic energy will have been dissipated in the form of other energies or mechanical work - sound, some heating of the ground and the object and perhaps a small dent.
Now the object is 3 ft closer to the center of the gravity field and has less potential energy than before (but still has some, it wants to fall further)
Thus the total energy equation is:-
Energy at the start (all potential) = Residual potential energy + kinetic energy of falling (which is = to dissipated energy -sound, heat and dent)
How does the coefficient of friction change with sliding velocity?
The relationship between the coefficient of kinetic friction ( denoted as uk ) and the mass, surface area, type of material or the speed of the object, is that the uk between a moving object and a non-moving object affects and distributes it on every points of an atom or molecule in all regions of both of the surface area of the two objects in contact with the object in motion, also the material from the object in motion relatively in contact to the surface of the other object which is not moving at all, determines the speed of the object, whether the material is rough that has lesser speed than that of a smooth surface or smooth vice versa.
How much mph is a snowflake falling at?
when a cold mass meets a warm air mass, it makes weather & any type really; it falls from the cloud where the cold water has frozenD:
How does surface energy relate to coefficient of frictions?
Surface energy can be viewed as the amount of work required to move a molecule from the bulk to the surface. So if something has high surface energy, it is has a low propensity to interact with another surface, thus giving it a lower COF.
What information does the slope of a velocity time graph provide?
The information given by the slope of ("on") a distance-time graph is the SPEED. The size ("magnitude") of the slope is the size of the speed and the units of the distance axis are divided by the units on the time axis to give the units of the speed ... so if your distance is in miles and time is in hours then your speed will be in miles per ("divided by") hours (mph)... but if distance is in metres and time is in seconds then the speed is in metre per second (m/s).
Why is there half the number mv2 in the equation of kinetic energy?
The formula as usually written is.............
KE =1/2 mass * velocity squared
KE = 1/2mV^2
but you can rewrite this as..........
KE = mV^2/2
which answers your question by saying........
mass and velocity squared are divided by 2 to get kinetic energy
1 Kilometer per Hour = 0.621371192237334 Miles per Hour 235 Kilometers per Hour = 146.02223017577347 Miles per Hour
When an object is laying on the ground what energy does it possess?
After water or anything else falls to the ground it has no potential energy anymore.
When mas is elevated it has potential energy. When it falls, the potential is converted to kinetic energy. That energy is then converted to light, heat, sound or compression of the object on to which the mass fell. But then the mass has no more potential energy.
