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A world class sprinter can burst out of the blocks to essentially top speed of about 11.5 ms in the first 15m of the racewhta is the average acceleration of the sprinter?
The average acceleration of the sprinter can be calculated using the formula ( a = \frac{v_f - v_i}{t} ), where ( v_f = 11.5 , \text{m/s} ), ( v_i = 0 , \text{m/s} ), and ( t = 15 , \text{m} ). Substituting these values into the formula gives an average acceleration of approximately 0.77 m/s².
How do you find average acceleration of an object?
a = w2r = v2/r where a is acceleration w is angular velocity r is radius of orbit v is velocity.
How is it possible for a car to have an average velocity of zero and an average speed of 65 mph?
If the car has an average speed of 65 mph, when it returns to its starting point, it will have a displacement of zero and an average velocity of zero, because velocity has both speed and direction.
Which is greater an acceleration from 25kmh to 30kmh or an acceleration from 96kmh to 100kmh if both occur at the same time?
The acceleration from 25kmh to 30kmh is greater. Acceleration is the rate change in velocity with respect to time (dv/dt). Going from an initial velocity at one point in time to a final velocity at a later point in time, the average acceleration is given by (vf - vi)/(tf -ti), the change in velocity divided by the duration of acceleration. Since going from 25kmh to 30kmh is a change in velocity of 5kmh and going from 96kmh to 100kmh is a change in velocity of 4kmh, and the duration of each is the same, 25 to 30 is the greater acceleration.
What is the change in velocity divided by the time interval in which the change occured?
It is acceleration. The difference between final velocity and initial velocity, divided by the time is the AVERAGE acceleration. Remember, though that velocity is a vector. So if you are going round in a circle at a constant speed, your direction of motion is changing continuously and so you are always accelerating!
What is the difference between average acceleration and instantaneous acceleration?
Average acceleration is the average of the accelerations acquired in the whole journey by a body while instantaneous acceleration is the acceleration of the body at any particular instant of time.
Equation for average acceleration?
There are various equations that involve acceleration; the simplest one is the definition of acceleration: acceleration = (change of velocity) / time.
Is average acceleration equal to instantaneous acceleration for a uniformly accelerated car?
Average acceleration will be equal to instantaneous acceleration when an object has an uniform acceleration throughout its motion. Example : A car accelerating at 1m/s2 uniformly in a straight line.
How do you calculate time with speed and acceleration?
Average acceleration = Change in speed/time so Time = Change in speed/Average acceleration
Find average acceleration and instanious acceleration?
average acceleration is the average of the acceleration of a body in its entire motion where as instantaneous acceleration is the rate of change of velocity at an instant. it may be a function of time or velocity or displacement.
Average acceleration formula?
Average Acceleration = V/t = Vf-Vi / Tf-Ti
What is the direction of average acceleration?
Average acceleration points in the same direction as the change in velocity over time. If the velocity is increasing, the average acceleration will be in the same direction as the velocity. If the velocity is decreasing, the average acceleration will be in the opposite direction.
What is the equation for average speed and acceleration?
Average speed = Distance travelled/time to travel the distance . Average acceleration = Change of speed/time for the change .
An object has initial velocity in the upward direction a final velocity in the downward direction and undergoes constant acceleration What can you say about its average acceleration?
The average acceleration of the object will be negative since it changes direction from upward to downward velocity. The acceleration will be constant because the object undergoes constant acceleration throughout the motion.
When is instantaneous acceleration and average acceleration the same?
Instantaneous acceleration and average acceleration are the same when an object's acceleration is constant over the entire time interval being considered. This means that the object's velocity is changing at a constant rate, resulting in both the instantaneous and average accelerations being equal.
How do you find average acceleration?
Acceleration = (change in speed) divided by (time for the change)
What will be instantaneous acceleration if average acceleration is zero?
If the average acceleration is zero, it means that the object's velocity is not changing over time. Since instantaneous acceleration is the acceleration at a specific moment in time, it can still have a non-zero value depending on the instantaneous velocity of the object at that moment.
