Kinematics

Kinetic Energy - EK (J) = 1/2mv2

Where m = mass (kg)
v = velocity (ms-1)

Therefore a 6.8 kg block travelling at 6 ms-1 has kinetic energy equal to:

(6.8/2) x 62

= 3.4 x 36

=122.4 Joules

Kinetic Energy was discovered and defined in the 19th century, particularly during the work of scientists like Joule and Clausius in the mid-1800s. The concept of kinetic energy as the energy of motion started to gain broader acceptance during this period.

Sharks can typically swim at speeds ranging from 1.5-5.5 km/h, depending on the species. Some faster species, like the shortfin mako shark, can reach speeds of up to 74 km/h in short bursts.

At the peak of the trajectory the potential energy will be at it's maximum and the vertical component (perpendicular to the earth) will be zero, ie if the ball was thrown straight up from the ground, it will start off with no potential energy and high kinetic energy. As it moves upward, the force of gravity will act on it and it will slow, thus the KE will decrease. At the same time it is gaining altitude, so the PE will increase. A the peak the KE is 0 and the PE is maximized and the ball is motionless. Then the ball will fall towards the earth and its KE will increase as it gains speed and its PE will decrease as it loses altitude until it hits the ground with the same amount of KE it started with, but moving in the opposite direction.

Any curved line will indicate a change in acceleration. Straight lines with slope indicate a steady velocity and straight lines with zero slope indicate a lack of motion.
If the X axis (left to right) is for time and the Y axis (up and down) is for speed, it would curve up.

Yes, pulling a wagon uphill requires exerting force against gravity, which increases the potential energy of the wagon as it gains height. This potential energy can then be converted back to kinetic energy as the wagon moves downhill.

what your talking about is terminal velocity, which is when the downward force of gravity (Fg)equals the upward force of drag (Fd). This causes the net force on the object to be zero, resulting in an acceleration of zero

Direction typically includes guidance, instructions, or advice on how to proceed towards a specific goal or destination. It can involve indicating a path, course of action, or providing orientation to help individuals navigate a certain situation or task effectively.

Multiply MPH by 1.609344 and it will give you KPH
45 * 1.609344 = 72.42048

for the most part multiplying by 1.6 is close enough

Mud slides are a fast type of mudflow that are ussually up to 50 mp/h. Now mudflows are ussualy less depending on what caused it. Some are only a few meters a day at top speed depending on how much of a slope and how long the slope is. They also depend on haw thick the mud is.

uh, down? (yes, down) The potential energy, as in a compressed spring, goes to zero as the spring is released. The potential energy (sort of) becomes the kinetic energy. (Now, I'm sure that that statement could get an argument in the physics study room in the science building, but it'll get you by...)

Acceleration is the change in velocity of an object over time. Take note that velocity is a vector quantity which means that it has magnitude and direction...

Thus...

An object undergoes acceleration when:

1. there is a change in the magnitude of the velocity (speed) of an object.

2. there is a change in direction of an object.

3. it changes both in direction and magnitude.

To convert 80 millimeters per second to miles per hour, you first convert millimeters to miles and seconds to hours. There are approximately 0.000000621371 miles in a millimeter and 3600 seconds in an hour. So, 80 millimeters per second is roughly 10.56 miles per hour.

The total kinetic energy of the particles in a sample is a measure of the sum of the individual kinetic energies of each particle in the sample. It depends on factors like temperature and the mass of the particles. The kinetic energy is directly proportional to the temperature of the sample.

Doubling mass affects kinetic energy in that the greater the mass, the greater the kinetic energy.

OK, but if you have a 10kg mass traveling at 2m/s and it bumps into and sticks to a 10g mass, the resultant speed would be 1m/s. The momentum stays the same. KE before is 10*2*2/2= 20, while the KE after is 20*1*1/2= 10. So it is not that the above answer is wrong, but rather, you question is not clear.

The kinetic energy of the student can be calculated using the formula KE = 0.5 * mass * velocity^2. Plugging in the values, we get KE = 0.5 * 60 kg * (3 m/s)^2 = 270 Joules.

The kinetic energy of each passenger is different because it depends on their individual mass and velocity. Kinetic energy is directly proportional to an object's mass and the square of its velocity, so passengers with different weights or traveling at different speeds will have different kinetic energies.

No. There is a well known distribution of probabilities that describes how likely it is that a given molecule has a given kinetic energy, but a gas will always have some fast and some cold molecule. The average KE is defined by temp, however.

If the object is placed at height, it has potential energy and when this object falls down, this potential energy is converted to kinetic (kinesis means movement) energy. If we have to lift object at height , we have to spend energy, witch is released during fall of the object. Example is when water comes down in hydroelectric power station potential energy is converted into kinetic energy. Witch is used to rotate wheel, creating electricity.

Without friction, the players would have trouble moving, as friction between their feet and the ground is part of what allows a person to walk or run. It would also be more difficult to make the ball start moving, or effectively catch it as friction helps grip the ball. It would also be more difficult to stop opposing players as friction between a tackler and the person being tackled is a large part of what allows the tackle to happen in many cases.

Without friction, feet would simply slide along the ground rather then gripping it to propel a player forward or stop him, and the ball would be so slippery it would be nearly impossible to hold onto without completely cradling it.

Kinetic energy is the energy created by the motion of an object. In classical mechanics, kinetic energy is calculated using the equation:

KE = 1/2 * m * v^2

(where KE = kinetic energy, m = mass, v = velocity)

Potential energy is energy that an object has simply due to its position and configuration. This energy can be caused by where it is in a force field. The most common potential energy is gravitational potential energy. There is also electrical, magnetic, and elastic potential energy. In classical mechanics, gravitational potential energy created by the Earth is calculated using:

PE = mgh

(where PE = potential energy, m = mass, g = acceleration due to gravity, h = height of the object)

kinetic energy-energy in motion object that change from being at rest

When a machine stops, its kinetic energy is converted into other forms of energy such as thermal energy or sound energy due to friction and other factors. Essentially, the kinetic energy is dissipated and transformed into different forms as the machine comes to a halt.

To walk you need to expend mechanical energy in forcing your body forwards through forcing your leg muscles to react with the ground through your feet. Your muscles obtain the energy from chemical reactions within your body, and ultimately from the food you have digested.

Iron itself is not kinetic energy; it is a chemical element. Kinetic energy is the energy an object possesses due to its motion. Iron can have kinetic energy if it is in motion, such as when it is moving as a part of a system or in a chemical reaction.