Physics: i need to move a 2000 refrigerator up my apartment , which is 6 meters above the ground how much work do i have?

The motion of the ball is a composition of the two motions:- on the horizontal axis, it is a uniform motion with constant speed - on the vertical axis, it is a uniformly accelerated motion with initial speed and constant acceleration toward the groundThe laws of motion on the two directions are:where h=78.4 m is the initial altitude of the ball. We want to find how far the ball travels on the x-axis. In order to do that, we must find the time t at which the ball reaches the ground, i.e. the time...

i need to move a 2000 refrigerator up my apartment

Ответ:

kaylaanderson348

17.04.2021

Physics

12,000 newtons?

Explanation:

0,0(0 оценок)

Ответ:

chrissy5189

11.05.2021

Physics

The motion of the ball is a composition of the two motions:
- on the horizontal axis, it is a uniform motion with constant speed v_x = 15 m/s

- on the vertical axis, it is a uniformly accelerated motion with initial speed v_y =0

and constant acceleration g=9.81 m/s^2

toward the ground

The laws of motion on the two directions are:
x(t) = v_x t

$y(t) = h - \frac{1}{2}gt^2$
where h=78.4 m is the initial altitude of the ball.

We want to find how far the ball travels on the x-axis. In order to do that, we must find the time t at which the ball reaches the ground, i.e. the time t at which y(t)=0:
$0=h- \frac{1}{2}gt^2$
$t= \sqrt{ \frac{2h}{g} }= \sqrt{ \frac{2 \cdot 78.4 m}{9.81 m/s^2} }=4.0 s$

And so now we can find the distance x(t) covered by the ball during this time:
x(t) = v_x t = (15 m/s)(4.0 s)=60 m

0,0(0 оценок)

i need to move a 2000 refrigerator up my apartment , which is 6 meters above the ground how much work do i have?

Ответ:

Ответ:

Ask your question to the AI advisor

More tips

Answers on questions: Physics

Ask an AI advisor a question