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3 years ago

What is an odometer?

Physics

2 answers:

ra1l [238]3 years ago

6 0

Answer:

It is a instrument used to measure the distance traveled by a vehicle.

Explanation:

This is what it looks like ↓

Oksana_A [137]3 years ago

5 0

Answer:

Odometer is the device that measures and shows the distance a vehicle have travelled.

Hope this help you :3

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an object was accelerated with a force of 150 N from rest to a velocity of 10m/s in 5 sec. the force of friction opposing the ob

astra-53 [7]

Force = (mass) x (acceleration)

Mass = (force) / (acceleration)

There was 150N of force in one direction and 100N of 'force' in
the other direction. The net force on the object was (150 - 100) = 50N .

Acceleration = (change in speed) / (time for the change)
= (10 m/s) / (5s) = 2 m/s²

Mass = (net force) / (acceleration) = (50 N) / (2 m/s²) = 25 kilograms

7 0

3 years ago

An object begins with a speed of 20 meters per second and slows down to a speed of 10 meters per second over a time of 5 seconds

Andreyy89

Answer:

V = 6 m/s

Explanation:

Given that,

Initial speed of an object is 20 m/s

Final speed of an object is 10 m/s

Time, t = 5 s

We need to find the average speed of the object during these 5 seconds. Let it is equal to V. Here, time is same. The average speed is given by :

$V=\dfrac{x+y}{2}\\\\\text{Putting values}\\\\V=\dfrac{20+10}{5}\\\\V=6\ m/s$

So, the average speed of the object is 6 m/s.

3 0

3 years ago

A toy plane with a mass of 20 kg is flying at 10 m/s. What is its kinetic energy?

gladu [14]

Answer:

$\boxed {\boxed {\sf A. \ 1000 \ Joules}}$

Explanation:

Kinetic energy can be found using the following formula.

$E_k=\frac{1}{2}mv^2$

where <em>m</em> is the mass and <em>v</em> is the velocity.

The mass of the toy plane is 20 kilograms and the velocity is 10 meters per second.

$m= 20 \ kg \\v= 10 \ m/s \\$

Substitute the values into the formula.

$E_k=\frac{1}{2}(20 \ kg) (10 \ m/s)^2$

Solve the exponent first.

(10 m/s)²= 10 m/s *10 m/s= 100 m²/s²

$E_k=\frac{1}{2} (20 \ kg) (100 \ m^2/s^2)$

Multiply the last two numbers together.

$E_k= \frac{1}{2}(2000 \ kg*m^2/s^2)$

Multiply by 1/2 or divide by 2.

$E_k= 1000 \ kg*m^2/s^2$

1 kilogram square meter per square second is equal to 1 Joule.
Our answer of 1000 kg*m²/s² is equal to 1000 Joules

$E_k= 1000 \ J$

The kinetic energy of the toy plane is <u>1000 Joules</u>

4 0

3 years ago

Read 2 more answers

Two rocks weighing 5 Newtons and 10 Newtons are dropped simultaneously from the same height onto a Coyote. After three seconds o

Ilia_Sergeevich [38]

<h2>Potential energy lost by 10 N rock will be greater</h2>

Explanation:

Two rocks of 5N and 10N falls from the same height . Thus they will loose the potential energy.

The potential energy lost = mass x acceleration due to gravity x height

The potential energy lost by first 5 N rock = 5 h

Because weight of rock m g = 5 N

Similarly , the potential energy lost by 10 N Rock = 10 h

here weight of rock m g = 10 N

Thus comparing these two , the potential energy lost by 10 N rock is greater than that of 5 N rock .

5 0

4 years ago

What will happen if a car experiences a 300 N force to the right from the engine and a separate 150 N force due to friction and

gayaneshka [121]

Force applied on the car due to engine is given as

$F_1 = 300 N$ towards right

Also there is a force on the car towards left due to air drag

$F_2 = 150 N$ towards left

now the net force on the car will be given as

$\vec F_{net} = \vec F_1 + \vec F_2$

now we can say that since the two forces are here opposite in direction so here the vector sum of two forces will be the algebraic difference of the two forces.

So we can say

$F_{net} = F_1 - F_2$

$F_{net} = 300 - 150$

$F_[net} = 150 N$

So here net force on the car will be 150 N towards right and hence it will accelerate due to same force.

5 0

3 years ago