0
Kinematics
Kinematics is the study of how a body moves. This includes linear motion, angular motion, and rotational motion.
3,459 Questions
What is the maximum kinetic energy on the inclined plane?
The maximum kinetic energy on an inclined plane occurs when the object reaches the bottom of the incline. This maximum kinetic energy can be calculated using the formula: KE = 0.5 * m * v^2, where m is the mass of the object and v is the velocity at the bottom of the incline.
Explain how the maximum height is related to the maximum potential energy?
This question makes sense in the context of something like a pendulum. At the top of its swing, a pendulum is at maximum height, is not moving and so has zero kinetic energy, and has maximum potential energy since all its energy is potential. As it falls, it gradually moves with increasing speed, so its potential energy is being converted to kinetic energy. At the bottom of the swing, it is moving at maximum speed, and all its energy is kinetic, none is potential, Then it starts to move upwards again, and its kinetic energy is gradually converted back to potential energy.
The force will be multiplied by the ratio of the areas of the two pistons. In this case, the ratio of areas is 100 cm^2 / 10 cm^2 = 10. Thus, the force on the second piston would be 10 N * 10 = 100 N.
13 knots is a unit of speed used in navigation and aviation, equal to 13 nautical miles per hour. It is commonly used to measure the speed of watercraft and aircraft.
Gives a pictorial indication of how far and object has moved?
A distance-time graph can provide a pictorial indication of how far an object has moved. The slope of the graph represents the object's speed, where a steeper slope indicates faster motion. The area under the curve on the graph represents the total distance traveled by the object.
Yes, the acceleration due to gravity always points vertically downward, regardless of the direction of an object's velocity. This is because gravity is a force that attracts objects towards the center of the Earth.
Why does a person's kinetic energy decreases as they enters water?
When a person enters water, they must displace water molecules, which requires energy. This energy is taken from the person's kinetic energy, causing it to decrease. Additionally, water resistance slows down the person's movement, further reducing their kinetic energy.
If a rock falls from a cliff for 9 seconds how fast is it going when it reaches the bottom?
Assuming that no net external forces are taking place, such as friction or air resistant, the only force acting upon the falling rock would be gravity. Using one of the kinematic equations, we can solve for the final velocity of the rock:
v(final) = v(initial) + at
We can substitute 0 for "v(initial)" since the rock is starting from rest. We can also substitute 9.81 meters per second squared for "a", which is the gravitational acceleration on Earth. Finally, we can substitute 9 seconds for "t". This gives us:
v(final) = 0 + (9.81)(9)
v(final) = 88.29 meters per second.
Calculate the potential energy at its highest point. Don't use the 6 meters above the ground - use the 5 meter difference from the lowest point. This part of the potential energy gets converted into kinetic energy, when the pendulum is at its lowest point. Just assume that all the potential energy (for the 5 meters difference) get converted into kinetic energy.
Calculate the potential energy at its highest point. Don't use the 6 meters above the ground - use the 5 meter difference from the lowest point. This part of the potential energy gets converted into kinetic energy, when the pendulum is at its lowest point. Just assume that all the potential energy (for the 5 meters difference) get converted into kinetic energy.
Calculate the potential energy at its highest point. Don't use the 6 meters above the ground - use the 5 meter difference from the lowest point. This part of the potential energy gets converted into kinetic energy, when the pendulum is at its lowest point. Just assume that all the potential energy (for the 5 meters difference) get converted into kinetic energy.
Calculate the potential energy at its highest point. Don't use the 6 meters above the ground - use the 5 meter difference from the lowest point. This part of the potential energy gets converted into kinetic energy, when the pendulum is at its lowest point. Just assume that all the potential energy (for the 5 meters difference) get converted into kinetic energy.
Yes, particles in the air have more average kinetic energy compared to particles in the mercury. This is because the air temperature is higher than the temperature of the mercury inside the thermometer, so the air particles are moving faster on average.
300,000 kph is approximately equal to 186,411 mph. This conversion can be done by multiplying the kph value by 0.621371.
You have converted potential energy to kinetic and then back to potential. If the marble came back exactly to its starting point you would have invented perpetual motion, but in fact it will lose a little energy in friction against the tube so it will gradually lose energy and eventually just stop at the lowest point of the tube.
What is study of velocity speed and acceleration called?
The study of velocity, speed, and acceleration is called kinematics. Kinematics is a branch of physics that deals with the motion of objects without considering the forces causing the motion.
Is kinetic energy a form of energy in the earth's system?
No, not at all. Kinetic energy is energy related to movement - any moving object has kinetic energy; at low (non-relativistic) speeds, the kinetic energy is calculated as 0.5 x mass x velocity squared.
No, not at all. Kinetic energy is energy related to movement - any moving object has kinetic energy; at low (non-relativistic) speeds, the kinetic energy is calculated as 0.5 x mass x velocity squared.
No, not at all. Kinetic energy is energy related to movement - any moving object has kinetic energy; at low (non-relativistic) speeds, the kinetic energy is calculated as 0.5 x mass x velocity squared.
No, not at all. Kinetic energy is energy related to movement - any moving object has kinetic energy; at low (non-relativistic) speeds, the kinetic energy is calculated as 0.5 x mass x velocity squared.
The rest energy of a pion is 140 MeV what is the kinetic energy when it moves at 0.80c?
total energy
E=gamma*m*c^2
where gamma = 1/sqrt(1-v^2/c^2)
K=E - mc^2 = (gamma-1)*(Rest Energy)
You know v, and can thus compute gamma, and you know the rest energy.
As a planet approaches perihelion does it potential energy increase or decrease?
At perihelion, the planet is closer to the Sun, and moves faster, that means that the potential energy is at a minimum, and the kinetic energy at a maximum. The sum of kinetic + potential energy, of course, remains constant.
At perihelion, the planet is closer to the Sun, and moves faster, that means that the potential energy is at a minimum, and the kinetic energy at a maximum. The sum of kinetic + potential energy, of course, remains constant.
At perihelion, the planet is closer to the Sun, and moves faster, that means that the potential energy is at a minimum, and the kinetic energy at a maximum. The sum of kinetic + potential energy, of course, remains constant.
At perihelion, the planet is closer to the Sun, and moves faster, that means that the potential energy is at a minimum, and the kinetic energy at a maximum. The sum of kinetic + potential energy, of course, remains constant.
What is the speed in km pH if you travel 1km in 1minute?
If you travel 1 km in 1 minute, your speed is 60 km/h. This is because there are 60 minutes in an hour, so covering 1 km in 1 minute translates to 60 km in 60 minutes, which is 60 km/h.
An olympic athlete can run 110 yrds in 10 seconds How fast in miles per hour can the athlete run?
110 yards in 10 seconds = 22.52 miles per hour.
Determine the net force on a car moving in a straight line at constant speed?
If traveling at constant speed in a constant direction then net force is zero as
there is no acceleration. Acceleration would change one or the other, or both.
F = ma = m (0) = 0
How do you find velocity given angle and highest point of object?
Use the equation square root of (gravity times distance)/(2 sin theta*cos theta) when the height difference between the initial and final is negligible, meaning the same. If different heights, use the same without the 2 on the bottom. Use the equation square root of (gravity times distance)/(2 sin theta*cos theta) when the height difference between the initial and final is negligible, meaning the same. If different heights, use the same without the 2 on the bottom.
How can air resistence be reduced?
To reduce air resistance, you can streamline the shape of the object moving through the air, reduce the surface area exposed to the air, minimize any appendages or protrusions, and use smooth, aerodynamic surfaces to minimize drag. Additionally, reducing the speed at which the object moves through the air can also help decrease air resistance.
Before the driver hit the brakes, the car's kinetic energy was (1/2 m V2) = (500) (20)2 = 200,000 joules.
After it stops at the stop sign, its kinetic energy and potential energy are both zero. The brakes
turned that whole 200,000 joules into heat, and the wind blew it away.
Unless . . .
Unless the car is an electric or a hybrid. What they do is to take that kinetic energy and put
a lot of it back into the battery, so you can use it again, and you don't completely lose it all.
That's what's the big deal about electric and hybrid cars.
How fast is an object going if its speed and time graph is horizontal?
An object can only gain speed if there is a net force on it. If a net horizontal force acting on an object is large enough, or acts for a long enough time, the object can aquire a speed up to just under the speed of light, 3 x 10^8 m/s.
