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Falling objectsdrop with an average acceleration of 9.8 m s2 if an object falls from a tall building how long will it take before it reaches a speed of 49 m sec?
Wiki User
∙ 14y ago
Short answer
5.0 s
Long answer
From the question the following information is known
a = -9.8 m/s2
vi = 0 m/s
vf = -49 m/s
ti = 0 s
using the formula
a = Δv/Δt
since initial velocity/time = 0
a = vf/tf
solve for t (multiply both sides by t and divide both sides by a)
tf = vf/a
tf = (-49 m/s)/(-9.8 m/s2) = 5.0 s
Wiki User
∙ 14y ago
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Falling objects drop with an average acceleration of 9.8ms squared If an object falls from a tall building how long will it take before it reaches a speed of 49 ms?
5 seconds
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.
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.
Derive the equation for instantaneous average acceleration vector?
You have a contradiction in your question. Instantaneous acceleration is the acceleration at a certain moment in time. Average acceleration is the average over a time interval.
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.
Falling objects drop with an average acceleration of 9.8ms squared If an object falls from a tall building how long will it take before it reaches a speed of 49 ms?
5 seconds
What is the acceleration of falling objects?
It is 9.81ms-2
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.
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.
Derive the equation for instantaneous average acceleration vector?
You have a contradiction in your question. Instantaneous acceleration is the acceleration at a certain moment in time. Average acceleration is the average over a time interval.
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
Average acceleration formula?
Average Acceleration = V/t = Vf-Vi / Tf-Ti
What is an example of average acceleration?
All acceleration in real life is an average figure = velocity increase / time
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 .
How do you find average acceleration?
Acceleration = (change in speed) divided by (time for the change)
When is instantaneous acceleration and average acceleration the same?
That's true throughout any period of time during which the acceleration is constant.
