Overview
15 M Detik Km Jamaica
Velocity is a measure of the direction and the speed of an object. Speed measures the rapidity of the movement of an object and it is scalar, while velocity is a vector. Linear velocity is calculated for objects moving in a straight line, while angular velocity is calculated for objects that are turning.
- (1 jam = 60 menit, 1 menit = 60 detik maka 1 jam = 60 x 60 detik = 3600 detik) Jadi konversi satuan km/jam ke satuan m/detik adalah sebagai berikut 1 km/jam = 1km/1jam = 1000m/3600 detik = 0,27777777 ≈ 0,2778 m/detik (dibulatkan 4 angka di belakang koma).
- Dan sekarang saya akan membahas kebalikannya, mengubah m/s menjadi km/jam. Ini soalnya Agar semakin mudah dalam memahami, saya akan gunakan soal pada artikel diatas, yaitu mengubah km/jam menjadi m/s. Kalau dalam soal itu diubah 72 km/jam menjadi 20 m/s. Sekarang kita akan buktikan apakah 20 m/s itu bisa menjadi 72 km/jam?
- Meter per detik adalah satuan kecepatan, sama dengan mil per jam. Kecepatan dapat dicari jika mengetahui jarak dalam satuan meter dan waktu dalam satuan detik. Anda dapat menggunakan rumus = untuk mencari kecepatan. Kecepatan juga dapat ditemukan dengan menginterpretasikan grafik jarak–waktu.
Calculating Velocity
The average velocity v can be calculated by dividing the total distance traveled, ∆x, by the average time traveled, ∆t: v = ∆x/∆t
1 Detik = 0.000278 Jam: 10 Detik = 0.0028 Jam: 2500 Detik = 0.6944 Jam: 2 Detik = 0.000556 Jam: 20 Detik = 0.0056 Jam: 5000 Detik = 1.3889 Jam: 3 Detik = 0.000833 Jam: 30 Detik = 0.0083 Jam.
15 M/detik Ke Km/jam
The SI unit for speed is meters per second (m/s). Kilometers per hour are also commonly used, along with miles per hour in the UK and the USA. If the direction is added to that, then it becomes velocity. For example, 10 m/s south.
For objects that are accelerating, velocity is calculated as follows:
- If an object is accelerating at a constant acceleration a with the initial velocity u for a period of time ∆t, the final velocity v is: v = u + a×∆t
- If an object is accelerating at a constant acceleration a with the initial velocity u and a final velocity v, the average velocity is: ∆v = (u + v) / 2.
Average Speeds
Light and Sound
According to the theory of relativity, the speed of light in a vacuum is the fastest speed at which energy and information can travel. It is denoted as c and is equal to c = 299,792,458 meters per second. Travel at the speed of light for matter would require infinite energy, therefore matter does not travel at that speed.
The speed of sound is usually measured in an elastic medium, and it is 343.2 meters per second in dry air at 20 °C. This speed is higher in liquids and even faster in solids. It depends on the density, compressibility, and the modulus of rigidity of the material. Mach number M is a special variable of the ratio of the object’s speed within a fluid medium and the speed of sound in that medium. It is calculated as
M = v/a
Here a is the speed of sound in the medium, and v is the speed of the object. Mach number is used to represent speeds for objects moving close to the speed of sound or faster, such as aircraft. It is not a constant; it depends on the medium, which in turn varies with pressure and temperature. The speed is referred to as supersonic for objects that travel faster than Mach 1.
Vehicles
Some speeds for different vehicles are as follows:
- Commercial airplanes with turbofan engines: the cruising speed ranges between 244 and 257 meters/second, 878 and 926 kilometers/hour, or 0.83 to 0.87 Mach.
- High-speed trains (such as the Shinkansen in Japan): maximum speeds the trains run are at a range between 36 and 122 meters/second, or 130 and 440 kilometers/hour.
Animals
Some maximum speeds of animals are as follows:
- Falcon: 89 meters/second, 320 kilometers/hour (about the same speed as high-speed trains)
- Cheetah: 31 meters/second, 112 kilometers/hour (about the same speed as the slower high-speed trains)
- Antelope: 27 meters/second, 97 kilometers/hour
- Lion: 22 meters/second, 79 kilometers/hour
- Gazelle: 22 meters/second, 79 kilometers/hour
- Wildebeest: 22 meters/second, 79 kilometers/hour
- Horse: 21 meters/second, 75 kilometers/hour
- Hunting dog: 20 meters/second, 72 kilometers/hour
- Elk: 20 meters/second, 72 kilometers/hour
- Coyote: 19 meters/second, 68 kilometers/hour
- Fox: 19 meters/second, 68 kilometers/hour
- Hyena: 18 meters/second, 64 kilometers/hour
- Rabbit: 16 meters/second, 56 kilometers/hour
- Cat: 13 meters/second, 47 kilometers/hour
- Grizzly bear: 13 meters/second, 47 kilometers/hour
- Squirrel: 5 meters/second, 18 kilometers/hour
- Pig: 5 meters/second, 18 kilometers/hour
- Chicken: 4 meters/second, 14 kilometers/hour
- Mouse: 3.6 meters/second, 13 kilometers/hour
15 M Per Detik Berapa Km Per Jam
Humans
- Humans can walk at about 1.4 meters per second, which is 5 kilometers per hour, and run at speeds of up to about 8.3 meters per second, which is about 30 kilometers per hour.
Examples of Different Velocities
Four-velocity
While the classical velocity is a vector in three dimensions, in special and general relativity velocity has an additional fourth dimension, to be represented in spacetime. This velocity is also referred to as four-velocity. The four-velocity of an object changes in direction, but the value is constant at the speed of light c. It is defined as:
U = ∂x/∂τ
Here x represents the world line, a unique distance that the object has traveled, and τ is the proper time or the time between two events in the reference frame of the two events.
Group Velocity
Group velocity is measured for waves. It describes the combined shape of the waves’ amplitudes. It can be calculated by finding ∂ω/∂k, where k represents the angular wavenumber, which is the spatial frequency of the wave. It is usually measured in radians per meter. The angular frequency of the wave, a scalar measure of the rate of rotation, is denoted by ω. It is generally measured in radians per second.
Hypervelocity
Hypervelocity is the velocity that is faster than 3000 meters per second. Solids moving with hypervelocity behave similarly to fluids because the stresses due to the inertia are much higher than the strength of the material upon impact. When the hypervelocity is extreme, the two colliding objects turn to the gas state, becoming vaporized. Objects move with hypervelocity in space and it is a phenomenon that the spacecraft designers and astronauts need to consider because collisions at these speeds cause significant damage to parts or to the entire spacecraft. NASA has a hypervelocity impact testing facility, where they experiment with hypervelocity impacts between the orbital debris and spacecraft and spacesuit materials. The researchers accelerate small objects to velocities greater than 7500 meters per second to test their impact on shields, spacecraft, and spacesuits.