Table of Contents
- 1 How do you prove that time of ascent is equal to time of descent?
- 2 How do you find the initial velocity of a vertical projectile?
- 3 How do you calculate descent time?
- 4 How does initial velocity affect projectile motion?
- 5 How do you find the equation for initial velocity?
- 6 How do you calculate the velocity of a vertically thrown ball?
How do you prove that time of ascent is equal to time of descent?
1 Answers
- Time of descent be t1 seconds and the object final velocity be v m/s. The distance covered will be the same as when the object is thrown upwards.
- From equation (1) and (2) we can see that u = v.
- t1 = t. time of ascent = time of descent.
How do you find the initial velocity of a vertical projectile?
The initial vertical velocity is the vertical component of the initial velocity: v 0 y = v 0 sin θ 0 = ( 30.0 m / s ) sin 45 ° = 21.2 m / s .
What is the equation for velocity of a falling object?
To find out something’s speed (or velocity) after a certain amount of time, you just multiply the acceleration of gravity by the amount of time since it was let go of. So you get: velocity = -9.81 m/s^2 * time, or V = gt.
What is an initial velocity of a thrown object?
If we calculate the time required for the ball to rise up to its highest point and come to rest, the initial velocity is 70.7 m/s and the final velocity is 0 m/s. Since we have called the upward velocity positive, then the acceleration must be negative or -9.80 m/s2.
How do you calculate descent time?
A good rule of thumb is to allow yourself two minutes for each 1,000 feet of altitude you need to lose. So, if you’re cruising at 10,000 feet above field elevation, start descending 20 minutes before your planned arrival.
How does initial velocity affect projectile motion?
If the same object is launched at the same initial velocity, the height and time of flight will increase proportionally to the initial launch angle. An object launched into projectile motion will have an initial launch angle anywhere from 0 to 90 degrees.
How do you find initial velocity with momentum?
Finding initial velocity using conservation of momentum and energy [closed]
- Find Normal force N=(m1+m2)g.
- Find Ff=μN.
- Find A: Fnet=mA.
- Find speed: v2f=v2i+2ad.
- Find vi: m1vi=(m1+m2)v.
When something is thrown upwards What is the velocity?
If you throw the ball upward with a speed of 9.8 m/s, the velocity has a magnitude of 9.8 m/s in the upward direction. Now the ball is under the influence of gravity, which, on the surface of the Earth, causes all free-falling objects to undergo a vertical acceleration of –9.8 m/s2.
How do you find the equation for initial velocity?
Writing down all of the known information is the first step to finding the right equation. If you know values for the distance, time, and acceleration, you can use the following equation: Initial velocity: V i = (d / t) – [(a * t) / 2] Understand what each symbol stands for. V i stands for “initial velocity” d stands for “distance”
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 initialinitial velocity?
Initial Velocity is the velocity at time interval t = 0 and it is represented by u. It is the velocity at which the motion starts. They are four initial velocity formulas:
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.