Table of Contents
- 1 Does it take longer for a ball to go up or down?
- 2 Why do objects fall at the same rate?
- 3 Why does acceleration stay the same in free fall?
- 4 Why do balls and feathers fall at the same time?
- 5 What is the acceleration of the ball at the moment the ball has zero velocity?
- 6 What happens to the ball’s velocity while the ball is in the air?
- 7 How do you calculate the velocity of a vertically thrown ball?
- 8 What is the speed of a ball in 1D kinematics?
- 9 What is the final velocity of the ball when it stops?
Does it take longer for a ball to go up or down?
The answer is: Down. Only if there was no air resistance would the up and down times be the same.
Why do objects fall at the same rate?
As such, all objects free fall at the same rate regardless of their mass. Because the 9.8 N/kg gravitational field at Earth’s surface causes a 9.8 m/s/s acceleration of any object placed there, we often call this ratio the acceleration of gravity.
Why does acceleration stay the same in free fall?
The actual explanation of why all objects accelerate at the same rate involves the concepts of force and mass. Thus, the greater force on more massive objects is offset by the inverse influence of greater mass. Subsequently, all objects free fall at the same rate of acceleration, regardless of their mass.
Why does a ball take same time to go up and down?
Because gravity provides the same acceleration to the ball on the way up (slowing it down) as on the way down (speeding it up), the time to reach maximum altitude is the same as the time to return to its launch position.
Why does a ball take longer to go down than up?
While coming down, the force of air drag is upward and the force of gravity is downward, so the ball’s downward acceleration has average magnitude less than g, say adown < g. . As aup > adown, so tdown > tup , thus it takes longer coming down.
Why do balls and feathers fall at the same time?
There is more friction between the feather and the air than there is with the bowling ball. Because there is no longer any air, there is no more opposing force – this makes the feather and the bowling ball fall to the ground at exactly the same time (see our video below for a demonstration).
What is the acceleration of the ball at the moment the ball has zero velocity?
Also, at the moment the ball has zero velocity =g=10m/s2.
What happens to the ball’s velocity while the ball is in the air?
Analyzing motion for objects in freefall For example, when a ball is thrown up in the air, the ball’s velocity is initially upward. Since gravity pulls the object toward the earth with a constant acceleration g, the magnitude of velocity decreases as the ball approaches maximum height.
How do you find when a ball will hit the ground?
To find when the ball hits the ground, we need to determine when the height is zero, H(t)=0 H ( t ) = 0 . We use the quadratic formula. Because the square root does not simplify nicely, we can use a calculator to approximate the values of the solutions.
How long does a ball take to hit the ground?
To decide where the balls land, we need to determine how long the balls are in the air. Both balls will take 2 seconds to hit the ground.
How do you calculate the velocity of a vertically thrown ball?
If a ball is thrown vertically upwards with an initial velocity V0then here is a set of formula for your quick reference. 1) Maximum height reached = H = V02/ (2 g) 2) Velocity at the highest point = 0 3) Time for upward movement = V0/g 4) Time for downward movement = V0/g 5) Total time of travel in air = (2 V0)/g
What is the speed of a ball in 1D kinematics?
Physics 1120: 1D Kinematics Solutions. 1. Initially, a ball has a speed of 5.0 m/s as it rolls up an incline. Some time later, at a distance of 5.5 m up the incline, the ball has a speed of 1.5 m/s DOWN the incline.
What is the final velocity of the ball when it stops?
After a certain time period t, the ball reaches a height beyond which it can’t move upwards anymore and stops there i.e. its velocity becomes zero at that height. And for this upward movement, the final velocity v2 is 0 because the ball has stopped at the end of this upward traversal.
What is the height of the ball as it rises?
The ball rises to a height of 3.3 m above the ground, or 3.3 m above the y = 0 position. You also have information about velocity at this point. You know that gravity causes an object to slow down as it moves upward and speed up as it moves downward.