it probably means "Mach"
yes because his car have an m!
A car with a constant speed of 8 m/s will travel 8m in 8s.
A stopped car has a speed of 0 m/s because it is not moving. Speed is the rate at which an object changes its position, so if the car is not changing its position, its speed is 0.
70 Speed Limit on Motorways in Britain
E stands to Energy M stands for Mass C is the Speed of Light.It means the speed of light (in vacuum).
I got this out of my text book Glencoe Science Texas Science If you are riding in a car with the cruise control on, the speed doesn't change. In other words, the car moves at a constant speed. If you are running at a constant speed of 5 m/s, you run 5 m each second. Whether you give you speed for the first 5 m you run or the last 5 m, you cover each 5-m interval in 1 s. When you are traveling at a constant speed, the speed at any instant of time is the same.
The average speed of the car is 20 m/s. This is calculated by dividing the distance travelled (2 km = 2000 m) by the time taken (100 s).
If the speed of a car traveling south is increasing at 5 m/s, then its acceleration is 5 m/s². This acceleration indicates the rate at which the car's velocity is changing per unit time.
The kinetic energy of the car can be calculated using the formula: KE = 0.5 * m * v^2, where m is the mass of the car (1600 kg) and v is the speed (12.5 m/s). Plugging in these values, the kinetic energy of the car is: KE = 0.5 * 1600 kg * (12.5 m/s)^2 = 125000 J.
Kinetic energy = 1/2 M V2At the lower speed, the car's KE is (500) (1)2 = 500 joulesAt the higher speed, the car's KE is (500) (2)2 = 2,000 joulesThe difference is the energy i.e. the work you have to put into itto raise the speed from 1 m/s to 2 m/s.(2,000 - 500) = 1,500 joules
The change in velocity is 26 m/s - 12 m/s = 14 m/s. The time taken for this change is 6 seconds. Therefore, the average acceleration is (change in velocity / time) = 14 m/s / 6 s = 2.33 m/s^2.
The "retardation" is more correctly referred to as "acceleration".Since the car is slowing down, the acceleration is negative.Its average value is(change in speed) divided by (time for the change) = (5 - 10)/2= -2.5 m/sec2.