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3 years ago

Why should we convert units within the metric system?

Physics

1 answer:

dexar [7]3 years ago

6 0

We need it to calculate the how big it is, it’s mass, or even volume to get the measurements of lots of objects

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A racing car whose mass is 1.2 X 10^3 kg is travelling at 8.9 m/s. It stops with a constant deceleration in a distance of 1.8X10

Alexeev081 [22]

given that initial speed of the car is

$v_i = 8.9 m/s$

now after travelling the distance d = 1.8 * 10^1 m the car will stop

so here we can use kinematics to find the acceleration of car

$v_f^2 - v_i^2 = 2 a d$

$0 - 8.9^2 = 2 a d$

here we have

$- 79.21 = 2*(18)*a$

$a = -2.2 m/s^2$

net force applied due to brakes of car is given by Newton's II law

$F = ma$

here we have

mass = 1.2 * 10^3 kg

$F_{net} = 1.2 * 10^3 * 2.2$

$F_{net} = 2.64 * 10^3 N$

now we can say

$F_{net} = F_1 + F_2$

$2.64 * 10^3 = 1.8 * 10^3 + F_2$

$F_2 = 8.4 * 10^2 N$

So the force applied due to brakes is given as above

7 0

3 years ago

Explain Newtons Laws

Vsevolod [243]

1) Newton first law of motion: state“If a body is at rest it reamain at rest and if it is in a motion it continu its motion unless a net external force acting on it”

This law also called law of inertia

2) Newton second law of motion: states that ‟acceleration to the force acting on the body and inversky proportional to the mass of the body”

3) Newton's third law of motion: It is not possible to exert a force abody with out the body exerting a forces in the opposite direction.

These forces are called action and reaction forces

hope it's helpful ❤❤❤❤❤❤

THANK YOU.

8 0

3 years ago

What type of balls sink and why?

forsale [732]

The type of balls that sink are the ones that are quite heavy because they have molecules that are dense inside of them that makes it sink. Hope it helps!!!

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3 years ago

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How much current is in a circuit that includes a 9-volt battery and a bulb with a resistance of 12 ohms?

Reil [10]

V = IR

Where v is voltage I is current and r is resistance

V = 9

R = 12

V/R = I

9/12 = I

I = 0.75 A

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3 years ago

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How is chemical bonding related to the organization of the periodic table ?? (Can someone help me this is due tomorrow)

Paladinen [302]

when a chemical bonds with another chemical it creates an element that element can be a gas, liquid, solid, or a metal. depending on which chemicals bond you will get different elements

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3 years ago

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