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3 years ago

A semi-truck is traveling at 65mph on the freeway and you are traveling in your Ford

Physics

1 answer:

Ymorist [56]3 years ago

7 0

Answer:

The vehicle with the most mass

Explanation:

Momentum is the quantity of motion in a body and it is dependent on its mass and velocity.

Momentum = m x v

m is the mass

v is the velocity

Now,

Both mass and velocity are directly proportional to momentum. Since the two bodies moves with the same velocity, the vehicle with the most mass will have the greatest momentum

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How much energy it takes to perform a specific amount of work

zmey [24]

Answer:

Depends

Explanation:

This depends on the amount of work the energy requires

6 0

4 years ago

Determine the initial velocity of the ball if it reaches a height of 15 meters.

jasenka [17]

Answer:

the initial velocity of the ball is 17.14 m/s

Explanation:

Given;

maximum height reached by the ball, h = 15 m

let the initial velocity of the ball = u

at maximum height, the final velocity of the ball is zero, v = 0

The initial velocity of the ball is calculated by using the following upward motion kinematic equation;

v² = u² - 2gh

0 = u² - 2(9.8 x 15)

u² = 294

u = √294

u = 17.14 m/s

Therefore, the initial velocity of the ball is 17.14 m/s

4 0

3 years ago

We showed that the length of the pendulum of period 2.000 seconds on the Earth’s surface was 0.99396 meters. What period would t

Kitty [74]

To solve this problem it is necessary to apply the concepts related to the Period based on gravity and length.

Mathematically this concept can be expressed as

$T= 2\pi \sqrt{\frac{l}{g}}$

Where,

l = Length

g = Gravitational acceleration

First we will find the period that with the characteristics presented can be given on Mars and then we can find the length of the pendulum at the desired time.

The period on Mars with the given length of 0.99396m and the gravity of the moon (approximately $1.62m / s ^ 2)$ will be

$T= 2\pi \sqrt{\frac{l}{g}}$

$T= 2\pi \sqrt{\frac{0.99396}{1.62}}$

$T = 4.921seg$

For the second question posed, it would be to find the length so that the period is 2 seconds, that is:

$T= 2\pi \sqrt{\frac{l}{g}}$

$2= 2\pi \sqrt{\frac{l}{1.62}}$

$l = 0.16414m$

Therefore, we can observe also that the shorter distance would be the period compared to the first result given.

8 0

3 years ago

The forces acting on a child sitting in a seat are described by the free-body diagram shown. What is the net force acting on the

r-ruslan [8.4K]

The net force is 0 N.

To find the total net force, all you need to do is add the forces.

So 100 + -100 = 0

Most of these questions are trick questions, but if you know Newton's laws of forces, then you should know that all forces should cancel out with each other.

Hope this helps!!!

3 0

3 years ago

The position x of a particle moving along x axis varies with time t as x = Asin(wt) , where A and w are constants . The accelera

Elodia [21]

Let's see

$\\ \rm\Rrightarrow x=Asin(\omega t)\dots(1)$