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3 years ago

If you represent velocity with an arrow, the length of the arrow represents -

Physics

2 answers:

Keith_Richards [23]3 years ago

4 0

Direction
its vector quantity

Mamont248 [21]3 years ago

3 0

Answer:

direction

Explanation:

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What do these letters stand for<br> P=mv

victus00 [196]

Answer:

The equation for momentum of a piece of matter.

In either case, the momentum would be less than a linebacker hitting you at full speed. The equation for momentum is written: p = mv where p stands for momentum. That is, mass times velocity equals momentum.

Explanation:

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4 0

2 years ago

A bungee jumper of mass 80kg jumps from a platform.

klio [65]

The speed he was moving at when he finished falling is 30 m/s.

The given parameters;

mass of the bungee, m = 80 kg

impulse provided by the rope, J = 3200 Ns

initial upward velocity of the jumper, u = 10 m/s

Let the final velocity after falling = v

Let the upwards motion = negative

Let the downwards motion when falling = positive

Apply the principle of conservation of linear momentum;

J = ΔP = Δmv = m(v - u)

3200 = 80(v - (-10))

3200 = 80(v + 10)

$v+ 10 = \frac{3200}{80} \\\\v+ 10 = 40\\\\v = 40-10\\\\v = 30 \ m/s$

Thus, the speed he was moving at when he finished falling is 30 m/s.

Learn more here:brainly.com/question/19027317

5 0

2 years ago

A rocket blasts off vertically from rest on the launch pad with an upward acceleration of 2.90 m/s2 . At 20.0s after blastoff, t

Brilliant_brown [7]

Answer:

A) 580m

B) 0 m/s

C) 9.8m/s^2

D) downward

E) 10.87s

F) 106.62 m/s

Explanation:

A) The distance traveled by the rocket is calculated by using the following expression:

$y=\frac{1}{2}at^2$

a: acceleration of the rocket = 2.90 m/s^2

t: time of the flight = 20.0 s

$y=\frac{1}{2}(2.90\frac{m}{s^2})(20.0s)^2=580m$

B) In the highest point the rocket has a velocity with magnitude zero v = 0m/s because there the rocket stops.

C) The engines of the rocket suddenly fails in the highest point. There, the acceleration of the rocket is due to the gravitational force, that is 9.8 m/s^2

D) The acceleration points downward

E) The time the rocket takes to return to the ground is given by:

$t=\sqrt{\frac{2y}{g}}=\sqrt{\frac{2(580m)}{9.8m/s^2}}=10.87s$

10.87 seconds

F) The velocity just before the rocket arrives to the ground is:

$v=\sqrt{2gy}=\sqrt{2(9.8m/s ^2)(580m)}=106.62\frac{m}{s}$

6 0

3 years ago

Static electric fields are caused by charged particles. What characterizes a positively charged particle?

sergeinik [125]

Static electric fields are caused by charged particles when the atoms which compose the particle will have the same number of electrons as protons.

Each point in space has an electric field associated with it when the charge of any kind is present. The value of E, often known as the electric field strength, electric field intensity, or just the electric field, expresses the strength and direction of the electric field.

Both the electromagnetic wave produced by a radio broadcast monopole antenna and the field created in the dielectric of a parallel-plate capacitor are examples of electric fields (which create a time-varying field). Every place in space where a charge, regardless of its shape, is present is said to have an electric field, which is an electric attribute. The electric field's equation is given as E = F / Q.

To learn more about electric field please visit -
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8 0

2 years ago

Answer fast enough and ill brainiest u

denis-greek [22]

Answer:

There is no question to answer friend

Well HI anyway

3 0

4 years ago

Read 2 more answers