Physics, 03.08.2019 03:00 Angela1998

What best describes an impulse acting on an object? a) the net force on an object divided by the time of impact b) the velocity of an object divided by its mass c) the product of an object's mass and the time of force impact d) the product of an object's mass and its change in velocity

Answers: 1

Show answers

Answers

Answer from: zozo72

option (D)

Explanation:

If a large force acting on a body for a very small interval of time, it is called impulse.

Impulse is a vector quantity. its SI unit is kg m/s.

The formula of impulse is given by

Impulse = Force x Δ t = change in momentum.

Answer from: whimsy

D) the product of an object's mass and its change in velocity

Explanation:

The impulse is defined as:

$I = F . \Delta t$ (1)

Where I is the impulse, F is the force and t is the time whereby the force will be applied on the object.

By using Newton's second law, the impulse can be related with the mass and the change in velocity as a consequence of the acting force:

F = ma (2)

Where F is the force, m is the mass and a is the acceleration.

The acceleration can be determined using the equations for a Uniformly Accelerated Rectilinear Motion:

$a = \frac{\Delta v}{\Delta t}$ (3)

Where $\Delta v$ is the change in velocity ( $v_{2} - v_{1}$ ) and $\Delta t$ is the interval of time ( $t_{2} - t_{1}$ )

Remember that the acceleration is defined as the change in velocity in an interval of time.

By replacing equation (3) in equation (2) it is gotten:

$F = m\frac{\Delta v}{\Delta t}$

$F . \Delta t = m\Delta v$

$F . \Delta t = m(v_{2} - v_{1})$

But $F . \Delta t$ is the impulse according with equation (1), therefore:

$I = m(v_{2} - v_{1})$

So what best describes an impulse acting on an object is the product of an object's mass and its change in velocity.

Answer from: Quest

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

hope this ! : )

Answer from: Quest

we have been given a quadratic function $f(x)=(x-5)^{2} +2$ and we need to restrict the domain such that it becomes a one to one function.

we know that vertex of this quadratic function occurs at (5,2).

further, we know that range of this function is $[2,\infty)$ .

if we restrict the domain of this function to either $(-\infty,5]$ or $[5,\infty)$ , it will become one to one function.

let us know find its inverse.

$y=(x-5)^{2}+2$

upon interchanging x and y, we get:

$x=(y-5)^{2}+2$

let us now solve this function for y.

$(y-5)^{2}=x-2\\ y-5=\pm \sqrt{x-2}\\ y=5\pm \sqrt{x-2}\\$

hence, the inverse function would be $f^{-1}(x)=5+\sqrt{x-2}$ if we restrict the domain of original function to $[5,\infty)$ and the inverse function would be $f^{-1}(x)=5-\sqrt{x-2}$ if we restrict the domain to $(-\infty,5]$ .

Another question on Physics

Physics, 21.06.2019 21:00

While listening to operatic solos, musicians process the lyrics and the tunes in separate brain areas. this most clearly illustrates the functioning of different

Answers: 1

Answer

Physics, 21.06.2019 21:20

The a metal retainer that keeps the rolling elements evenly spaced. n a. seal n b. separator n c. bearing n d outer race

Answers: 1

Answer

Physics, 21.06.2019 23:00

If an inclined plane is 5 m long and 2 m high, what is its mechanical advantage? a. 2.5 b. 3 c. 7 d. 10

Answers: 1

Answer

Physics, 22.06.2019 16:00

Suppose a soccer ball is kicked from the ground at an angle 20.0º above the horizontal at 8.00 m/s. the y-velocity is determined to be 2.74 m/s. how long will the ball be in the air? assume the ball lands at the same height at which it was kicked.

Answers: 2

Answer

You know the right answer?

What best describes an impulse acting on an object? a) the net force on an object divided by the ti...

Questions