4 years ago

HELP ASAPPPP PLZZZZZZ I WILL GIVE YOU 50 POINTS

Physics

2 answers:

Schach [20]4 years ago

3 0

Answer:

the answer is c i know it

Explanation:

its c

xz_007 [3.2K]4 years ago

3 0

Answer:

Kinetic Energy and speed mass

Explanation:

You might be interested in

You have been called to testify as an expert witness in a trial involving a head-on collision. Car A weighs 690.0 kg and was tra

kirza4 [7]

Answer:

115 km/h

Explanation:

$m_1$ = Mass of car A = 690 kg

$m_2$ = Mass of car B = 520 kg

g = Acceleration due to gravity = 9.81 m/s²

a = Acceleration

u = Initial velocity

v = Final velocity

$a=\mu g\\\Rightarrow a=0.75\times 9.81\\\Rightarrow a=7.3575\ m/s^2$

$v^2-u^2=2as\\\Rightarrow v=\sqrt{2as+u^2}\\\Rightarrow v=\sqrt{2\times 7.3575\times 6+0^2}\\\Rightarrow v=9.396\ m/s$

$m_1u_1 + m_2u_2 =(m_1 + m_2)v\\\Rightarrow u_1=\frac{(m_1 + m_2)v-m_2u_2}{m_1}\\\Rightarrow u_1=\frac{(690+520)9.396-520\times -\frac{74}{3.6}}{690}\\\Rightarrow u_1=31.96\ m/s$

Converting to km/h

$31.96\times 3.6=115.056\ km/h$

Initial velocity of car A = 115 km/h

7 0

3 years ago

Earth is approximately a sphere with a radius of 6.37 x 106 m. What are i) its circumference in km ii) its surface in km² iii) i

LuckyWell [14K]

Its 12>87+becasue i did ioty in my last period

5 0

3 years ago

ou are looking for a new tennis partner. Which of these people would most likely demonstrate good sportsmanship based on the inf

Dennis_Churaev [7]

<h2><u>Answer:</u></h2>

As you are looking for a new tennis partner. People should keep in mind that they should go for the one who most likely demonstrate good sportsmanship

Luis, when you pursue the principles in tennis, you realize when to talk up, you don't blast a racquet or shout, holler.

Whatever it is following the principles and being respectful it the most ideal approach.

7 0

3 years ago

Choose the correct statement regarding energy production in the interior of a star and energy production in a power plant.

sergey [27]

' C ' is the only correct statement here.

8 0

3 years ago

Energy that a microwave use to heat food?

yanalaym [24]

Electromagnetic energy

6 0

3 years ago