0
What is the acceleration of a car traveling at a speed of 100 km hr comes to a rest at a stop sign in 12.5 seconds?
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 else can I help you with?
What is the average acceleration between 0 seconds and 4 seconds?
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)
Hits a speed of 50 m s after 5 seconds what is his rate of acceleration?
If he started out from "rest" (zero speed), then his average acceleration for the 5 seconds is50/5 = 10 meters per second2
What is the acceleration of an obeject from 6 seconds to 9 seconds?
You haven't mentioned the speed difference or speed gain in this question so it cannot be answered
A car is traveling south at a speed of 68 miles per hour and then begins traveling at a speed of 69 miles per hour but continues traveling in the same direction What has changed?
Both the speed and velocity have increased as a result of acceleration.
A car traveling at 25 meters a second speeds up to 40 meters a second over a period of 15 seconds what is the average acceleration of the car?
Average acceleration = (change in speed) divided by (time interval)A = (40 - 25) / 15 = 15/15 = 1 meter/sec2
Compare velocity from acceleration?
Velocity is a constant traveling speed. Acceleration is increasing traveling speed (variation of speed over time)
Is your speed is constant if you are traveling in a straight line with an acceleration of zero?
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.
Is your speed constant if you are traveling in a straight line with an acceleration of zero?
Yes as there is no acceleration then the speed which is already there would remain the same as no change in speed is brought out.
What is the average acceleration between 0 seconds and 4 seconds?
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)
What is the acceleration of car that travels in a straight line at constant speed?
Straight line at a constant speed = no acceleration
A car traveling at a speed of 25 ms increases its speed to 30.0 ms in 10.0 seconds. what is the magnitude of its acceleration?
The acceleration of the car can be calculated using the equation: acceleration = change in velocity / time taken. The change in velocity is 30.0 m/s - 25.0 m/s = 5.0 m/s. The time taken is given as 10.0 seconds. Plugging these values into the equation gives an acceleration of 0.5 m/s^2.
Are you accelerating if you are traveling in a constant direction with constant speed and explain?
No, you are not accelerating if you are traveling in a constant direction with a constant speed. Acceleration is the rate of change of velocity, so if your velocity remains constant, there is no acceleration.
Why is traveling in a circle at constant speed called acceleration?
Traveling in any direction, but moving is acceleration. if a particle moves in a circle and comes to the initial position, then the velocity would be zero. acceleration is a scalar quantity and not a vector quantity. answered by K.Sreram from India
If the speed of an object does NOT change the object is traveling at a what?
It is travelling at a constant speed. This does not mean that there is no acceleration or that the direction of motion remains the same.
If the speed of a car traveling south is increasing 5 ms it and its acceleration is?
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.
Can an object traveling at constant velocity have acceleration why?
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.
If the speed of an does NOT change the object is traveling at a what?
It is travelling at a constant speed. This does not mean that there is no acceleration or that the direction of motion remains the same.
