Best Answer

The speed keeps increasing. At any instant, the speed is 32.2 feet per second faster

than it was 1 second earlier. That number is called the "acceleration of gravity".

Q: How fast does a rock free fall in feet per second?

Write your answer...

Submit

Still have questions?

Continue Learning about Math & Arithmetic

Acceleration of gravity near the surface of the earth is 9.8 meters (32.2 feet) per second2. Downward velocity after 2 seconds = 19.2 meters (64.4 feet) per second.

Every second, it falls farther and faster than it fell in the previous second.

The mass is irrelevant. If the object is in free fall (that is, air resistance can be neglected), an object will fall 4.9 meters in one second.

Because this is a free fall questions, the equation d=1/2gt² can be used. Gravity is a given, 9.8 m/s² and the time is your 15 seconds of free fall. d=1/2(9.8m/s²)(15s)²= 1,102.5m. To find feet multiply 3.28084 to answer because that is how many feet are in a meter.

Ignoring air resistance, the velocity of any object that goes off a cliff is 29.4 meters (96.5 feet) per second downward, after 3 seconds in free-fall.

Related questions

Depend on if you are talking a "free-fall" or an object descending the side of a mountain. Free-fall all objects regardless of weight fall at the same rate of speed (36 feet per second).

When something falls, it picks up speed continuously. For every second it falls, its speed increases another 9.8 meters (32.2 feet) per second.

In free fall, the object accelerates downward at a rate of 9.8 m/s^2 due to gravity. After each second, the object's velocity increases by 9.8 m/s. This means that the object falls faster and faster with each passing second.

Free fall acceleration on Earth is approximately 9.81 m/s^2, which means that the speed of an object in free fall will increase by 9.81 meters per second for every second it falls. This value is a constant for any object falling near the surface of the Earth in a vacuum.

An object in free fall will fall approximately 64 feet in 2 seconds.

Free fall acceleration is the acceleration experienced by an object when it falls due to gravity, without any other external forces acting on it. Near the surface of the Earth, free fall acceleration is approximately 9.81 m/s^2. It is constant and acts in the downward direction.

The speed of free fall is approximately 9.8 m/sĀ², which is the acceleration due to gravity on Earth. This means that an object in free fall will increase its speed by 9.8 meters per second for every second it falls.

Objects in free fall near Earth fall at a rate of approximately 9.8 meters per second squared, known as the acceleration due to gravity. This means that for each second an object falls, it will increase its speed by 9.8 m/s.

A skydiver, falling without an open parachute, will reach a terminal velocity of approx 200 km per hour (55 metres/second).

After 5 seconds your speed is about 160 feet per second due to gravity speed = gt = 32 x 5 = 160 You travel a distance in 5 seconds of 1/2gt^2 = 400 feet After that it depends on weight but due to air resistance speed is constant near 160 feet per second so to go next 800 feet takes about 5 seconds Total time = 10 seconds to free fall 1200 feet If there were no air, it would take take only about 8.5 seconds

I think that the fastest free fall speed is limited by physics to 32 ft per second per second.

The velocity for each second of free fall increases. Due to the acceleration due to gravity, the object in free fall accelerates at a constant rate of 9.81 m/s^2. This means that the object's velocity increases by 9.81 m/s every second.