From the problem statement, the initial speed is 100 km/hr, the final speed is 0, and the time of change is 12.5 seconds. The acceleration is therefore:
[(0 - 100)km/hr]/12.5 sec = -8 km/hr/sec.
It is customary, but not fundamentally necessary, to "normalize" the units of time so that they can be expressed as a square of the same unit. This can be done by noting that 1 hr = 3600 sec, so that -100 km/hr = 1/36 km/sec. The answer can then be written as - (8/36) km/sec2, and 8/36 can be reduced to 2/9.
Note that, since the sign of the acceleration is negative, this acceleration could properly be described as "deceleration".
what is the change in speed or velocity? average acceleration will be change in speed or velocity divided by time taken (4 seconds in ur case)
If he started out from "rest" (zero speed), then his average acceleration for the 5 seconds is50/5 = 10 meters per second2
You haven't mentioned the speed difference or speed gain in this question so it cannot be answered
Both the speed and velocity have increased as a result of acceleration.
Average acceleration = (change in speed) divided by (time interval)A = (40 - 25) / 15 = 15/15 = 1 meter/sec2
Velocity is a constant traveling speed. Acceleration is increasing traveling speed (variation of speed over time)
Light does not accelerate because it always travels at a constant speed in a vacuum, approximately 300,000 kilometers per second. This is the maximum speed that any object can travel in the universe according to the theory of relativity.
Acceleration is defined as any change in velocity, including changes in direction. When an object travels in a circle at constant speed, it is constantly changing direction, which requires acceleration towards the center of the circle to maintain that curved path. This acceleration is called centripetal acceleration.
If your acceleration is zero, then yes, you are traveling at a constant speed. The path does not matter. Acceleration measures the change in velocity, so an acceleration of zero means that there is zero change in velocity and therefore the speed is constant.
Traveling without changing speed means maintaining a constant velocity or pace throughout the journey without any acceleration or deceleration. This usually results in a consistent and smooth movement, whether by car, train, plane, or any other mode of transportation. It can help with fuel efficiency and passenger comfort but may take longer to reach the destination compared to a journey with speed changes.
Yes, if you are traveling in a straight line with an acceleration of zero, your speed will be constant. This means that your velocity is not changing, and you are moving at a steady rate.
The acceleration of the car can be calculated using the formula: acceleration = (final velocity - initial velocity) / time. In this case, the initial velocity is 30 m/s, the final velocity is 0 m/s (since the car stops), and the time is 3.0 seconds. Plugging these values into the formula gives: acceleration = (0 - 30) / 3.0 = -10 m/s^2. Therefore, the acceleration of the car is -10 m/s^2.
what is the change in speed or velocity? average acceleration will be change in speed or velocity divided by time taken (4 seconds in ur case)
An object traveling at constant velocity cannot have acceleration because acceleration is the rate of change of velocity over time. If the velocity of an object is constant, there is no change in velocity and therefore no acceleration.
Straight line at a constant speed = no acceleration
An object can be accelerating while traveling at the same speed if the direction of its velocity is changing. Even if the speed remains constant, if the object is changing its direction of motion, it is still considered to be accelerating. Acceleration is defined as any change in velocity, which includes changes in both speed and direction.
its' about acceleration speed times 4^2