Question

A stone is thrown straight drownward wirh initial speed of 4.8 m/s from a height of...

A stone is thrown straight drownward wirh initial speed of 4.8 m/s from a height of 51 m. What is the times it takes to reach the ground ?

Homework Answers

Answer #1

Here we go to use the basic equation of kinematic of a movement with the acceleration of the gravity

In our case the initial point is     and the initial velocity (the sign minus is because the stone is thrown downward). The final height is , so the time that takes to reach it

Here we have a second grade equation, and the solution is given by

Here we have two solution. Like one of them is negative the solution of our problem is the other

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
1. A stone is thrown straight downward with initial speed of 4.1 m/s from a height...
1. A stone is thrown straight downward with initial speed of 4.1 m/s from a height of 86 m. What is the time it takes to reach the ground? 2. You drop a stone into a 300 meter deep well. How long after you will hear the sound of hitting? Sound velocity is given 334 m/s. 3. You throw a stone vertically upward from the roof of an 39 m tall building with a velocity of 54 m/s. How long...
A stone is thrown straight down from the top of a building with an initial speed...
A stone is thrown straight down from the top of a building with an initial speed of 2.23 m/s. The height of the building is 18.2 m. You can assume air resistance is negligible (a) Find the time it takes for the stone to reach the ground. s (b) Find the distance the stone travels within the last 1.00 s. m
A stone is thrown from the top of a cliff with the initial velocity of 20.0...
A stone is thrown from the top of a cliff with the initial velocity of 20.0 m/s straight upward. The cliff is 50.0 m high and the stone just misses the edge of the cliff on its way down. Determine (a) the time needed for the stone to reach its maximum height; (b) the maximum height, as measured from the ground; (c) the time needed for the stone to return to the level of the thrower; (d) the velocity of...
A stone is thrown with an initial speed of 12 m/s at an angle of 53°...
A stone is thrown with an initial speed of 12 m/s at an angle of 53° above the horizontal from the top of a 35 m building. If g = 9.8 m/s2 and air resistance is negligible, then what is the speed of the rock as it hits the ground? Question 4 options: 28 m/s 29 m/s 30 m/s 31 m/s
A blue ball is thrown upward with an initial speed of 21.2 m/s, from a height...
A blue ball is thrown upward with an initial speed of 21.2 m/s, from a height of 0.5 meters above the ground. 2.6 seconds after the blue ball is thrown, a red ball is thrown down with an initial speed of 11.7 m/s from a height of 25.7 meters above the ground. The force of gravity due to the earth results in the balls each having a constant downward acceleration of 9.81 m/s2. A) What is the speed of the...
from a 90 m cliff a Stone is thrown upward with initial velocity of 65 m/s....
from a 90 m cliff a Stone is thrown upward with initial velocity of 65 m/s. find how long it takes to reach max height. total travel tome from throwing point to ocean surface. velocity of hitting ocean surface. velocity 20 m above ocean surface. at what height above the throwing point is velocity 40 m/s
a steel ball is thrown downward with an initial speed of 10.5 m/s from the height...
a steel ball is thrown downward with an initial speed of 10.5 m/s from the height of 62.4 m above the ground. At the same instant, a camera is propelled vertically upward from the ground level with a speed of 34.3m/s. At what height above the ground will the two objects pass each other.
A blue ball is thrown upward with an initial speed of 21.4 m/s, from a height...
A blue ball is thrown upward with an initial speed of 21.4 m/s, from a height of 0.9 meters above the ground. 2.6 seconds after the blue ball is thrown, a red ball is thrown down with an initial speed of 9.2 m/s from a height of 25.3 meters above the ground. The force of gravity due to the earth results in the balls each having a constant downward acceleration of 9.81 m/s2. 1) How long after the blue ball...
A stone thrown vertically on Mars. Suppose a stone is thrown vertically upward from the edge...
A stone thrown vertically on Mars. Suppose a stone is thrown vertically upward from the edge of a cliff on Mars (where the acceleration due to gravity is only about 12 ft/s^2) with an initial velocity of 64 ft/s from a height of 192 ft above the ground. The height S of the stone above the ground after t seconds is given by s=-6t^2+64t+192 a. Determine the velocity v of the stone after t seconds b. When does the stone...
A ball is thrown directly downward with an initial speed of 7.75 m/s, from a height...
A ball is thrown directly downward with an initial speed of 7.75 m/s, from a height of 29.4 m. After what time interval does it strike the ground? ______________ s