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How long will it take an object that falls from rest to attain a velocity of 147 m sec?
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
What else can I help you with?
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?
acceleration according to Newton's second law of motion, F=ma. The object will accelerate in the direction of the net force applied.
Does velocity increase impact?
Velocity is the speed something travels, so if anything travels at a higher rate of speed, the impact will be greater. No matter what the material speeding may appear to be, it will always impact harder with greater velocity. It's like shooting a paintball up close to a wall. The impact will be far harder than at long range, and a large splatter will appear on the wall. That's velocity for yah!
How do the magnitudes of weight and air drag compare?
They are totally unrelated. Weight is basically the force of attraction between the Earth and the body. It doesn't depend on shape. Air drag depends on how fast a body is moving through air and depends on its shape. There is one interesting example : when a parachute, or even an object falls under gravity for long enough, it may reach a speed where the air drag equals the weight - and then further acceleration ceases and the speed is called the terminal velocity. The terminal velocity therefore depends critically on the shape, and the weight.
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 long will it take an object that falls from the rest to attain a velocity of 147 msec?
The time it takes for an object to fall from rest and attain a velocity of 147 m/s can be calculated using the kinematic equation: v = at, where v is the final velocity, a is the acceleration (due to gravity, approximately 9.81 m/s^2), and t is the time. Rearranging the equation to solve for time, t = v/a. Substituting the values, t = 147 m/s / 9.81 m/s^2 = approximately 15 seconds.
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.
What happens to the velocity of an accelerating object?
The velocity of an accelerating object increases over time as long as the acceleration is maintained.
What determines whether an object falls to Earth's surface or orbits Earth?
The object's initial velocity and height above the Earth's surface determine whether it falls to the Earth's surface or stays in orbit. If the object's initial velocity is high enough and directed perpendicular to the surface, it can enter orbit around the Earth. If the velocity is too low or the object is at a low enough height, it will fall towards the Earth's surface.
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).
If an object starts to accelerate?
If an object moved with constant acceleration it's velocity must ?
Does a body moving with uniform acceleration have momentum?
Yes, a body moving with uniform acceleration has momentum. Momentum is the product of an object's mass and its velocity, and acceleration is the rate of change of velocity. As long as the object is moving and has mass, it will have momentum.
As long as an object travels in a straight line at a steady speed it velocity is what?
If an object travels in a straight line at a steady speed, its velocity remains constant. The velocity in this case would be the speed of the object in a specified direction, which does not change over time.
In what directions are positive velocity's?
Positive velocity can be in any direction as long as the object is moving in that direction. For example, a car moving northward has a positive velocity in the north direction.
What is the force that causes the velocity of an object to change?
The force that causes the velocity of an object to change is called acceleration. Acceleration is defined as the rate at which an object's velocity changes over time, and it can be caused by various factors such as gravity, friction, or applied forces.
How much above earth distance an object do not falls?
An object will continue to orbit Earth at a certain distance above its surface, as long as its velocity counteracts the gravitational pull of Earth. This is known as achieving orbit, where the object remains in free fall around Earth due to a balance between its forward momentum and the pull of gravity.
