What is mean by free fall a ball is dropped from the roof of a building it takes 10 seconds to reach the ground find the height of the building?
A ball is dropped from the roof of a building. It takes 10 seconds to reach the ground. While considering an object in a freefall, air resistance is assumed to be zero and objects are falling with an acceleration of g=9.8m/s2 . A ball is dropped from the top of a building, so it will experience free fall.
How long would it take for a ball dropped from the top of a 256 foot building to hit the ground?
1 Expert Answer So the ball will hit the ground in 4 seconds.
Why did a ball thrown to the air fall back to the ground?
Answer. This is because the force of earth’s gravitational field is always directed downwards (towards the center of the earth. When the ball is thrown up, it is going against the earth’s gravitational field and so, the earth’s gravitational force pulls it back down, accelerating it downwards.
Why does a ball thrown?
Solution. The reason is that when the ball is thrown, the ball is in motion along with the person and train. Due to the inertia of motion, during the time the ball remains in air, the person and ball move ahead by the same distance. This makes the ball fall back into the thrower’s hand.
Why does a ball moving upwards slow down and fall back?
It is affected by the throw (which gives the initial upward velocity) and gravity which applies a constant negative acceleration. The ball travels upward for 3 seconds, slowing down because of gravity until it reaches a stop and will begin falling.
Can a ball move upward and still be falling?
Since you can no longer provide a force to the ball, the only force left on it is gravity, so it’s in free-fall. The ball’s velocity is still upwards for a while, but under the relentless acceleration of gravity, it will slow until it reaches zero at the top of its arc, and then head towards the ground.
What two forces act on a ball when you throw it?
Answer: The forces on a thrown ball after it leaves the thrower’s hand are the force of gravity and possibly the force of air resistance. The force of gravity at the surface of the Earth is the gravitational acceleration at that location (9.8 meters per second per second) times the mass of the ball.
How does weight affect the time it takes an object to fall to the ground?
Do heavier objects fall in less time? Answer 1: The simplest answer is: no, an object’s weight usually will not change its falling speed. For example, you can test this by dropping a bowling ball and a basketball from the same height at the same time–they should fall at the same speed and land at the same time.
Does the size of an object affect how fast it falls?
Heavier things have a greater gravitational force AND heavier things have a lower acceleration. It turns out that these two effects exactly cancel to make falling objects have the same acceleration regardless of mass.
How does weight affect a falling object?
Mass does not affect the speed of falling objects, assuming there is only gravity acting on it. Both bullets will strike the ground at the same time. The horizontal force applied does not affect the downward motion of the bullets — only gravity and friction (air resistance), which is the same for both bullets.