Question

i knew how to do divison when my teacher taught me on the first day but now my teacher keeps making divison way more harder than it needed to be, even with simple numbers.
And it messed me up a lot. Can someone give me a step by step explanation for these problems??

$208 \div 13$
$315 \div 5$
$624 \div 13$
$780 \div 65$
$651 \div 21$
$864 \div 36$
$630 \div 14$
​

Answer 1

Answer:

Required Answer :

As per the provided information in the given question, we have :

Distance covered, s = 100 m

Average velocity, \overline{\nu}

ν

= 20 m/s

Final velocity, v = 25 m/s

We've been asked to calculate the initial velocity and acceleration of the car.

As we know that, average velocity is given by :

⇒ \begin{gathered}\boxed{\sf{ \overline{\nu} = \dfrac{v + u}{2} }}\\\end{gathered}

ν

=

2

v+u

v denotes final velocity

u denotes initial velocity

\overline{\nu}

ν

denotes average velocity

⇒ \overline{\nu}

ν

= (u + 25)/2

⇒ 20 = (u + 25)/2

⇒ 20 × 2 = u + 25

⇒ 40 = u + 25

⇒ 40 ― 25 = u

⇒ 15 m/s = u

Therefore, initial velocity of the car is 15 m/s.

Now, we need to calculate the acceleration of the car. By using the third equation of motion,

⇒ v² — u² = 2as

v denotes final velocity

u denotes initial velocity

a denotes acceleration

s denotes distance

⇒ (25)² — (15)² = 2 × a × 100

⇒ 625 ― 225 = 200a

⇒ 400 = 200a

⇒ 400 ÷ 200 = a

⇒ 2 m/s² = a

Therefore, acceleration of the car is 2 m/s².

Answer 2

Answer:

for which standard is this question.