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Furkat [3]
3 years ago
9

Would this be 2N because 6 and 4 cancel out? Or no because 4 plus two is six and that cancels everything out to 0

Physics
1 answer:
soldier1979 [14.2K]3 years ago
5 0

Answer: It would be 0

Explanation: Because like you said it would cancel each other out because if you are going 6N to the right and then you go 6N to the left you are actually not moving at all  

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In this problem, you will use your prior knowledge to derive one of the most important relationships in mechanics: the work-ener
Leya [2.2K]

Answer:

Explanation:

a )

Work done by force = change in kinetic energy

F x s =  ( vf² - vi² ) / 2m

F =  ( vf² - vi² ) / 2ms

acceleration = ( vf² - vi² ) / 2m²s

b )

F = ( vf² - vi² ) / 2ms [ calculated above ]

c )

Work done by force

= change in kinetic energy

= ( vf² - vi² ) / 2m

4 0
3 years ago
A Ferris wheel turns at a constant 150.0 revolutions per hour. (a) Express this rate of rotation in units of radians per second.
RUDIKE [14]

Answer:

(a) 0.261 rad/s

(b) 1007.72 m

Explanation:

The angular velocity of the Ferris wheel is 150.0 revolutions per hour.

(a) To calculate the angular velocity of the wheel in units of radians per second, you take into account the following equivalence:

1 hour = 3600 seconds

1 revolution = 2π radians

You use the previous conversion factors:

150.0\ \frac{rev}{h}*\frac{2\pi \ rad}{1\ rev}*\frac{1\ h}{3600\ s}=0.261\frac{rad}{s}

In units of radians per seconds the wheel turns at 0.261 rad/s

(b) To find the arc length described by the wheel, you first calculate the angle described by the  wheel in the time t, by using the following formula:

\theta=\omega t     (1)

ω: angular velocity = 0.261 rad/s

t: time = 4.95 min

You first convert the time to units of seconds

4.95min*\frac{60s}{1min}=297s

Next, you replace the values of the parameters in the equation (1):

\theta=(0.261\frac{rad}{s})(297s)=77.51rad

Next, you use the following formula for the arc length:

s=r\theta     (2)

r: radius of the wheel = 13.0 m

You replace the values of the parameters in the equation (2):

s=(13.0m)(77.51rad)=1007.72m

The arc length described by the wheel is 1007.72m

4 0
4 years ago
The use of force to move an object is<br> I
Law Incorporation [45]

Answer:

and unbalanced force

Explanation:

if balanced then the object will exert as much force as you are. its like pushing against a wall. and unblanced force is like pushing against a chair

5 0
3 years ago
A ball is dropped from somewhere above a window that is 2.00 m in height. As it falls, it is visible to a person boxing through
Irina18 [472]

Answer:

4.14 m

Explanation:

In the last leg of the journey the ball covers 2 m in 2ms or 0.2 s .

Let in this last leg , u be the initial velocity.

s = ut + 1/2 g t²

2 = .2 u + .5 x 9.8 x .04

u = 9.02 m /s .

Let v be the final velocity in this leg

v² = u² + 2 g s

v² = (9.02)² + 2 x 9.8 x 2

= 81.36 +39.2

v = 10.97 m / s

Now consider the whole height from where the ball dropped . Let it be h.

Initial velocity u = 0

v² = u² +2gh

(10.97 )² = 2 x 9.8 h

h = 6.14 m

Height from window

= 6.14 - 2m

= 4.14 m

5 0
4 years ago
PLEASE ANSWER ASAP! 10 POINTS
nevsk [136]

Answer:

reactants

Explanation:

7 0
3 years ago
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