How do you find the speed of an object when it hits the ground?

How to use the free fall formula: an example

1. Determine the gravitational acceleration.
2. Decide whether the object has an initial velocity.
3. Choose how long the object is falling.
4. Calculate the final free fall speed (just before hitting the ground) with the formula v = v₀ + gt = 0 + 9.80665 * 8 = 78.45 m/s .

What is the initial velocity of a ball dropped from height?

Since a ball is dropped from certain height the initial velocity is going to be zero. And acceleration is nothig but acceleration due to gravity. And distance ‘s ‘ is nothing but height. Initial velocity=0. acceleration=9.8 height=10 we use formula. v^2 =u^2+2as =>. v^2=2as =>. v=√2as=>. V=√2×9.8×10=> V=14 Answer

What is the potential energy and acceleration of a dropped ball?

So therefore potential energy of the ball must be equal to kinetic energy of the falling body. so v is equal to sqrt 2 gh. So answer is 14.14 m/s. Since it is dropped it’s initial velocity must be zero. And acceleration is acceleration due to gravity that is 9.8m/s^s.

What happens when you drop a ball without twisting it?

You dropped the ball as is – without giving it any kind of turn or twist. Now the medium will try to resist the ball from falling. Depending on the medium, the ball can either accelerate till it falls on the ground, or accelerate for some time – get fixed on a constant velocity and fall with it.

How do you find the final velocity of a falling object?

As we know it will be zero. v is the final velocity of that object. g is the gravitational constant and its value is 9.8 m/s^2. h is the height from where the object was fallen. Since u is zero. As now equation becomes v^2=2gh. Taking under root for calculating final velocity. Applying Newton’s third law of motion in Physics i.e v^2=u^2+2gh.