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3 years ago

A 3000 B forcé is applied to car which causes an acceleration of 3m/s^2 what is the mass of the car

Physics

1 answer:

nika2105 [10]3 years ago

8 0

Answer:

1000 Kilograms

Explanation:

Force is equal to mass times acceleration so if the force is 3000 and the acceleration is 3 m/s^2 then all you need to do to find the mass is divide 3000 by 3 which gives you 1000

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Which of these is a unit of heat? a. joule b. degree celsius c. kelvin d. tesla

attashe74 [19]

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Two balls have the same mass. One ball moving along the positive x axis and the other ball moving along the positive y axis unde

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3 years ago

Read 2 more answers

What is the electric force acting between two charges of 0.0042 C and −0.0050 C that are 0.0030 m apart?

Black_prince [1.1K]

Answer:

A.−2.1 × 10^10 N

Explanation:

Using the formula;

E = k Q1Q2/d²

Where;

E is the electrical force

k is the constant

Q1, Q2 are the two charges and

d is the distance between the two charges

Therefore;

E = (9 x 10^9) × (0.0042) × (-0.0050) / (0.0030)²

= -2.1 x 10^10 N

Therefore; electrical force acting between the two charges is -2.1 x 10^10 N.

6 0

4 years ago

On a part-time job, you are asked to bring a cylindrical iron rod of density 7800 kg/m3 , length 81.7 cm and diameter 2.70 cm fr

Genrish500 [490]

Answer:

35.792 N

Explanation:

d = Diameter of rod = 2.7 cm

h = Length of rod = 81.7 cm

$\rho$ = Density of rod = 7800 kg/m³

g = Acceleration due to gravity = 9.81 m/s²

Volume of rod

$V=\dfrac{1}{4}\pi d^2h\\\Rightarrow V=\dfrac{1}{4}\times \pi\times (2.7\times 10^{-2})^2\times 81.7\times 10^{-2}$

Mass is given by

$m=\rho V\\\Rightarrow m=7800\times \dfrac{1}{4}\times \pi\times (2.7\times 10^{-2})^2\times 81.7\times 10^{-2}\\\Rightarrow m=3.6486\ kg$

Weight is given by

$W=mg\\\Rightarrow W=3.6486\times 9.81\\\Rightarrow W=35.792\ N$

The weight of the rod is 35.792 N

7 0

3 years ago

What is the acceleration of an object that takes 20 sec to change from a speed of 200 m/s to 300 m/s ?

marin [14]

Given:

initial velocity, u = 200 m/s

Final velocity, v = 300 m/s

Time taken, t = 20 sec

To be calculated:

Calculate the acceleration of given object ?

Formula used:

Acceleration = v - u / t

Solution:

We know that,

Acceleration = v - u / t

☆ Substituting the values in the above formula,we get

Acceleration ⇒ 300 - 200 / 20

⇒ 100/20

⇒ 5 m/s²

5 0

4 years ago