Answer:
use formula: a= Vf-Vi/t

rearrange: Vf=at

solve: Vf= 4.0m/s squared x 6s

Vf = 24 m/s --> sigdigs

Vf = 2.4 x 10^1 m/s

rearrange: Vf=at

solve: Vf= 4.0m/s squared x 6s

Vf = 24 m/s --> sigdigs

Vf = 2.4 x 10^1 m/s

An object is moving to the right and speeding up. Its acceleration isA. positiveB. NegativeC. zero

What is the result of a force distributed over an area?a. pressure b. mass c. temperature d. volume

two small balls are suspended on parallel threads of the same length so that they touch each other in the vertical position. the mass of the first ball is 0.4kg and the mass of the second ball is 200g. the first ball is deflected so that its centre of mass rises to a height of 6cm and it is then released. to what maximal height will the 200g ball rise if the collision is elastic?

What is a time paradox?

Compared to yellow light, orange light has A. a different polarization.B. a faster wave velocity.C. the same frequency.D. a longer wavelength.

What is the result of a force distributed over an area?a. pressure b. mass c. temperature d. volume

two small balls are suspended on parallel threads of the same length so that they touch each other in the vertical position. the mass of the first ball is 0.4kg and the mass of the second ball is 200g. the first ball is deflected so that its centre of mass rises to a height of 6cm and it is then released. to what maximal height will the 200g ball rise if the collision is elastic?

What is a time paradox?

Compared to yellow light, orange light has A. a different polarization.B. a faster wave velocity.C. the same frequency.D. a longer wavelength.

between two ions of opposite charges. In ionic bonding, electrons transfer from one atom to another.

If you are **riding **a skateboard and hit something like a curb with the front wheels then the **skateboard **would stop due to the friction offered by the club but your body would fall forward due to the **effect **of that inertia.

According to Newton's **first **law, until pushed to alter its condition by the intervention of an external force,

Every object will continue to be at **rest **or in uniform motion along a single **direction **until/unless some external force is applied.

When the front wheels of a skateboard **collide **with something like a curb, then the **skateboard **will halt because of the friction created by the object, but your body will fall forward as a result of the **inertia**.

Learn more about **Newton's First Law **here, refer to the link;

#SPJ2

Your body will keep moving forward and fly off your skateboard since the curb only stops the board, not yourself.

The expression for the bullet's speed vbullet is and the speed of a 9.0 g bullet is v=16.8 m/s

A bullet of mass m is fired into a block of mass m that is at rest. the block, with the bullet embedded, slides distance d across a horizontal surface. the coefficient of kinetic friction is μk.

The initial kinetic energy of the bullet is given by

where

m is the mass of the bullet

v is the initial speed of the bullet

The expression for the bullet's speed vbullet is

where

is the coefficient of kinetic friction

g is the acceleration of gravity

The work done by the force of friction is

where d is the displacement of the block+bullet.

Because the final kinetic energy is zero (the bullet with the block comes at rest), we can write:

And so

By solving for v, the solution for the bullet speed:

The speed of a 9.0 g bullet that, when fired into a 12 kg stationary wood block causes the block to slide 5.4 cm across a wood table. Assume that k=0.20.

We have:

the mass of the bullet, m = 9.0 g = 0.009 kg

the mass of the block, M = 12 kg

the distance covered by the block+bullet, d = 5.4 cm = 0.054 m

the coefficient of friction,

the acceleration of gravity,

By substituting, we got

Learn more about friction brainly.com/question/5884009

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uk=2m*the normal force

the distance d is needed only if you were asked about work

the distance d is needed only if you were asked about work

For a pendulum with a massless rope 'L' meters long, swinging through

a small arc, the period of the swing is

2 π √(L/g) seconds .

and it doesn't depend on the mass of the thing on the end of the rope ...

that could be a pebble or a bus.

For the girl on the 2.5-m rope,

Period = (2 π) √(2.5 / 9.8) = 3.17 seconds

Frequency = 1 / period = about

If a girl with a mass of 40 kg is swinging from a rope with a length of 2.5 m , then the frequency of her swinging is **0.32 Hz**

**Simple Harmonic Motion** is a motion where the magnitude of acceleration is directly proportional to the magnitude of the displacement but in the opposite direction.

The pulled and then released **spring** is one of the examples of Simple Harmonic Motion. We can use the following formula to find the period of this spring.

T = Periode of Spring ( second )

m = Load Mass ( kg )

k = Spring Constant ( N / m )

The **pendulum** which moves back and forth is also an example of Simple Harmonic Motion. We can use the following formula to find the period of this pendulum.

T = Periode of Pendulum ( second )

L = Length of Pendulum ( kg )

g = Gravitational Acceleration ( m/s² )

Let us now tackle the problem !

__Given:__

Mass of A Girl = m = 40 kg

Length of Rope = L = 2.5 m

Gravitational Acceleration = g = 10 m/s²

__Unknown:__

Frequency of Swinging = f = ?

__Solution:__

Recall the formula for calculating period as mentioned above.

Finally, we can calculate the magnitude of frequency with the following formula.

- Model for Simple Harmonic Motion : brainly.com/question/9221526
- Force of Simple Harmonic Motion : brainly.com/question/3323600
- Example of Simple Harmonic Motion : brainly.com/question/11892568

**Grade: **High School

**Subject: **Physics

**Chapter: **Simple Harmonic Motion

**Keywords: **Simple , Harmonic , Motion , Pendulum , Spring , Period , Frequency

the answer is true improve core stability

This is true in many cases, but not all. There are exercises in which you simply raise and lower an exercise ball over your head (kind of like weight lifting), but whenever the ball is in front of you and you reach out at all with your arms, that is a core workout.

peaks compressions dips rarefactions

A longitudinal wave ischaracterized by rarefactions. A longitudinal wave is a wave motion wherein theparticles in the wave medium are displaced parallel to the advancing wave. When motionis detected from the source, the particle next to it vibrates from its rest positionand a progressive change in phase vibration is observed at each particle withinthat wave. The result is that the energy is transported from one region to theother. These combined motions result in the movement of alternating regions of rarefactionin the direction of transport of energy.

It's characterized by both **compression and rarefaction**.

(the compression in front of the waves induces a rarefaction behind the wave)

(the compression in front of the waves induces a rarefaction behind the wave)