A stone is dropped from a height of 50 m above the ground will it has a uniform or a non-uniform speed as it moves towards the ground.
It will gather speed because of acceleration due to gravity.
The acceleration is g=9.8 m/s²
A stone is dropped from a cliff 50m high. Disregarding air resistance (a) how long does it take stone to reach the ground (b) what is its speed when it strikes the ground?
To determine whether the stone dropped from a height of 50 m above the ground will have a uniform or non-uniform speed as it moves towards the ground, we need to consider the forces acting on the stone.
When the stone is dropped, the only significant force acting on it is gravity. Gravity constantly pulls the stone downward, causing it to accelerate. The acceleration due to gravity near the Earth's surface is approximately 9.8 m/s^2.
Since the force of gravity is constant, the stone will experience a constant acceleration as it falls. According to Newton's second law of motion (F = ma), when the force acting on an object is constant, the object will experience a uniform acceleration.
However, it's important to note that while the acceleration is uniform, the speed of the stone will not be uniform. As the stone falls, its speed increases due to the constant acceleration. This means that the stone's speed is changing over time, making it non-uniform.
In conclusion, the stone dropped from a height of 50 m above the ground will have a non-uniform speed as it moves towards the ground due to the constant acceleration caused by gravity.