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How long will it take an object that falls from rest to attain a velocity of 147 m sec?
Wiki User
∙ 14y ago
The formula is vf = v0 + at
It means that the (final velocity) is equal to the (initial velocity) plus (acceleration multiplied by elapsed time). We can rearrange the equation to look like
t = (vf - v0) / a
Since initial velocity is zero, and we are assuming that Earth has acceleration due to gravity of 9.8 m/s2, we can sub the values into the equation and get
t = (147 m/s) / (9.8 m/s2)
t = 15 s
So it will take 15 seconds
Wiki User
∙ 14y ago
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How do you calculate the horizontal distance traveled by an object if you are given the horizontal velocity and time in the air?
You cannot because you do not know how long before the object falls to the ground and so stops moving.
As long as an object is not gaining or losing mass a net force on the object will cause a change in?
Velocity
Can a velocity time graph be parallel to time axis?
Sure, as long as the object is moving at a constant speed.And by the way ... It's easy to draw a speed/time graph, butI'm pretty sure it's not possible to draw a velocity/time one.
Can an object be moving when its acceleration is zero?
Acceleration, which is the change of velocity over the change in time, will equal zero when there is no change in velocity. This can occur when an object is stationary or when an object is traveling at a constant velocity.
How does velocity affect us?
Velocity having large magnitude makes it possible for us to get places in a hurry."Velocity" is not a difficult concept. It just means the speed of a moving object,along with the direction in which it's moving.Speed is easy to understand because we deal with it every day. But speed aloneleaves out some very important information from a full description of motion, becauseit doesn't tell you anything about the direction. If you know the speed and the direction,then you can tell where the object has moved to, after any amount of time.So I guess you might say that your velocity is what determines where you can goand how long it takes you to get there.
How do you calculate the horizontal distance traveled by an object if you are given the horizontal velocity and time in the air?
You cannot because you do not know how long before the object falls to the ground and so stops moving.
When the acceleration of an object is zero what is the velocity at the same time?
As long as acceleration is zero, the object's velocity is constant.
As long as an object is not gaining or losing mass a net force on the object will cause a change in?
Velocity
If an object starts to accelerate?
If an object moved with constant acceleration it's velocity must ?
What is the force that causes the velocity of an object to change?
Any force causes the velocity of an object to change, as long as it is not exactly compensated by one or a group of other forces that exactly cancel its influence.
As long as an object travels in a straight line at a steady speed it velocity is what?
That's the definition of constant velocity. Also a good description of zero acceleration.
How long does it take to drive 1042 miles?
There is no answer to this question because the time will depend on velocity of the object.
Can the Inertia of an object change as the object's velocity is changing?
No. What we call 'inertia' is actually a manifestation of the object's mass,which doesn't change (as long as the object isn't moving at some seriousfraction of light speed).
Is it true or false that velocity only describes the direction in which the object is moving?
Technically, the term velocity means how fast and in what direction is a given object moving; knowing the velocity is certainly part of calculating how long it takes to get from one place to another, but you also have to know how far apart those places are. If two locations are 100 miles apart, and you can drive that distance at 50 miles per hour, then the trip takes two hours.
What happens to the momentum of an object traveling with a certain velocity if a load is added to it while in motion?
The momentum of an object traveling with a certain velocity will increase if a load is added to it while in motion. This is because momentum is directly proportional to both mass and velocity, so adding mass will result in an increase in momentum as long as the velocity remains constant.
Can the direction of the velocity of an object change keeping the acceleration constant?
In order to change the direction of the velocity, acceleration is absolutely required. And as long as you've got it, there's no reason why it can't be constant. An object moving in a circle at a constant speed ... like a TV satellite ... has constant acceleration, and the direction of its velocity is constantly changing.
An object is released into the air at an initial height of 6 feet and an initial velocity of 30 feet per second The object is caught at a height of 7 feet How long is the object in motion?
23 sec
