Rgfffffffffffffffffffffffffffffffffffffffffffffffffffffff

A 15 kg mass is lifted to a height of 2m. What is gravitational potential energy at this position

7nadin3 [17]

Answer: 294J

Explanation:

$U_g=mg(y_f-y_i)$

$U_g=(15)(9.8)(2-0)=294J$

7 0

3 years ago

Read 2 more answers

Dos Autos se acercan uno hacia el otro como se muestra en la figura. Si los carros chocan y quedan pegados, DETERMINE: a) las co

lisov135 [29]

Answer:

Build Your Confidence

Check your grammar, spelling, and punctuation instantly with Grammarly

grammarly.comBuild Your Confidence

Check your grammar, spelling, and punctuation instantly with Grammarly

grammarly.com

Explanation:

Build Your Confidence

Check your grammar, spelling, and punctuation instantly with Grammarly

grammarly.comBuild Your Confidence

Check your grammar, spelling, and punctuation instantly with Grammarly

grammarly.comBuild Your Confidence

Check your grammar, spelling, and punctuation instantly with Grammarly

grammarly.comBuild Your Confidence

Check your grammar, spelling, and punctuation instantly with Grammarly

grammarly.comBuild Your Confidence

Check your grammar, spelling, and punctuation instantly with Grammarly

grammarly.comBuild Your Confidence

Check your grammar, spelling, and punctuation instantly with Grammarly

grammarly.com

8 0

3 years ago

A football player kicks a 0.94 kg football with a force of 2.4 N. Calculate the acceleration of the football as the player kicks

Anon25 [30]

Hello, I hope this helps :)
So the equation to figure these kinds of questions is F=MA
F refers to force, which in this situation F would be 2.4
M refers to mass, mass would be 0.94
A refers to acceleration, which we are trying to figure out
So if we put in the information we know into the equation, it is now 2.4=0.94*A
So with that equation we can figure that 2.4 divided by 0.94 equals A
So 2.4/0.94= 2.553191489362 :'D
Don't worry, the rounded and correct answer is 2.6
Have a nice day =)

7 0

3 years ago

Read 2 more answers

Calculate the speed of an object that moves 200 m in 4 s?

Rasek [7]

50m/s

I divided the 200m by 4s (so 200/4) to get 50m per second

7 0

2 years ago

Determine the total moment of inertia of a merry-go round with 5 children sitting on it. Of the five children, four are seated a

BaLLatris [955]

Answer:

Explanation:

Given that,

We have five children.

Each of mass m =30kg

They sit on a merry go round

Mass of Merry go round M= 150kg

Radius of Merry go round is r =2m

Four children sit at the edge of the merry go round but one child sit at the centre.

The four child that sit at the edge are 2m from the centre of the merry go round but the one at the centre is 0m from the centre

Moment of inertia?

Moment of inertia is given as

I=Σmi•ri²

For the question, the moment of inertia is the combination of inertial of child and the merry go round

I= I(merry go round) + I(four child)+ I(last child)

The merry go round is assumed to be a solid cylinder, so it is going to have the moment of inertia of solid cylinder

Then,

I(merry go round ) =½ Mr²

Also, Four of the child has the same moment of inertia, they are 2m form the centre of the merry go round why the last child has no moment of inertia

I= I(merry go round) + I(four child) +I(last child )

I= ½Mr² + 4mr² + mr'²

I = ½ × 150 ×2² + 4×30×2² + 30×0²

I = 300 +480+0

I = 780 kgm²

7 0

3 years ago