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3 years ago

Define momentum in term of mass and velocity

Physics

1 answer:

KengaRu [80]3 years ago

5 0

Answer:

Momentum: It is the quantity of motion of a moving body, measured as a product of its Mass and Velocity.

Explanation:

Definition of momentum :

Momentum is the quantity of motion of a moving body, measured as a product of its Mass and Velocity.

Momentum is denoted by p
Formula for momentum is
$p = mass\times velocity$

Its unit is kg-m/s.

For example:

A bowling ball of large mass moving very slowly can have the same momentum as a cricket ball of small mass that is thrown with a very high velocity

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How much force does it take to accelerate a 3.50 kg mass from 3.00 m/s to 17.0 m/s in a time of 2.00 seconds?

zheka24 [161]

Answer:

Force = 24.5 Newton

Explanation:

Given the following data;

Mass = 3.50 kg

Initial velocity, u = 3 m/s

Final velocity, v = 17 m/s

Time, t = 2 seconds

To find the force;

First of all, we would determine the acceleration of the object using the formula;

Acceleration = (v - u)/t

Acceleration = (17 - 3)/2

Acceleration = 14/2

Acceleration = 7 m/s²

Now, we can find the force using the formula;

Force = mass * acceleration

Force = 3.5 * 7

Force = 24.5 Newton

5 0

3 years ago

What are possible formulas for impulse? Check all that apply. J = Ft J = J = Fv J = J = mv J = p

Dmitry_Shevchenko [17]

In general, impulse = F x time=mxv
if J is the impulse, J=Ft, J=mv, and J=p because p=mv
possible formulas are
J = Ft, J = mv and J = p

8 0

2 years ago

Calculate the displacement of a car waxing point of 11 m to the final positions of 4 meters

Nastasia [14]

Answer:

-7 m

Explanation:

Displacement is a vector connecting the initial position of motion of an object to its final position.

For the car in this problem, we have:

- Initial position: + 11 m

- Final position: + 4 m

Therefore, the vector displacement will be:

d = +4 - (+11) = -7 m

Which means:

- Magnitude of 7 m

- Negative direction

3 0

3 years ago

Why is friction important for gymnast working on parallel bars

igomit [66]

Hey there,
Friction is important to increase the friction between the bars and the gymnast to prevent the gymnast from falling and hurting themselves.

Hope this helps :))

~Top♥

8 0

3 years ago

A fixed 15.3-cm-diameter wire coil is perpendicular to a magnetic field 0.77 T pointing up. In 0.20 s , the field is changed to

maksim [4K]

Answer:

Induced emf will be 0.468 volt

Explanation:

We have given diameter of wire d = 15.3 cm

So radius $r=\frac{d}{2}=\frac{15.3}{2}=7.65cm$

So area $A=\pi r^2=3.14\times (7.65)^2=183.76\times 10^{-4}m^2$

Change in magnetic field dB = 0.26 - 0.77 = -0.51 T

Time for change in magnetic field dt = 0.26 sec

We know that emf is given by $e=\frac{-d\Phi }{dt}=-A\frac{dB}{dt}=-183.76\times 10^{-4}\times \frac{-0.51}{0.2}=0.0468volt$

5 0

3 years ago

Define momentum in term of mass and velocity​

Define momentum in term of mass and velocity