Ask question

Ask question

All categories

4 years ago

9

Please help this is timed

2 answers:

Wittaler [7]4 years ago

6 0

Answer:

46

Explanation:

because

Alex17521 [72]4 years ago

4 0

The correct answer to this question is 46 m/s.

CALCULATION:

As per the question, the initial velocity of the car u = 0 m/s.

The acceleration of the car is given as a =

The time taken by the car t = 10 seconds.

We are asked to calculate the final velocity of the car.

From equation of kinematics, we know that-

v = u + at

= 0 + 4.6 × 10 m/s

= 46 m/s. [ans]

Hence, the final velocity of Ariana's car is 46 m/s,

You might be interested in

In what way is a screw similar to an inclined plane?

mylen [45]

They both have a mechanical advantage meaning that the force applied to the mechanism is not the same as the force produced.

5 0

3 years ago

Read 2 more answers

Samuel adds a teaspoon of salt to a glass of water. He notices that the salt disappears . samuel takes a sip to discover that th

german

It is a Physical Change, because the water and the salt kept their original properties. I hope this helps! :) Have a great day!

5 0

3 years ago

Read 2 more answers

It says find the slope for each line I'm stuck on number one can you help me

Allushta [10]

$\text{slope}=\frac{y_2-y_1}{x_2-x_1}$

(-2, -1)(3, 1)

Therefore,

$\text{slope}=\frac{1-(-1)}{3-(-2)}=\frac{1+1}{3+2}=\frac{2}{5}$

7 0

1 year ago

Lara has noticed that all of her friends are very careful about what they eat, and they are all much thinner than she is. She wa

nlexa [21]

A. Talk to a trusted adult to help her evaluate her eating and exercise in a healthy way.

7 0

4 years ago

Read 2 more answers

A 3.59 kg block is released from rest 53.0 m above the ground. When it has fallen 21.3 m, what is its kinetic energy

Juli2301 [7.4K]

<h3><u>Answer:-</u></h3>

$\implies$ 1115.2 Joules

<h3><u>Given :- </u></h3>

$\red{\leadsto}\:$ $\textsf{Height\: at \:rest\:}$ $\sf,h_2= 53.0m$

$\green{\leadsto}\:$ $\textsf{Height\: to\:which\;block\:}$ $\sf,h_1= 21.3$

<h3><u>Solution</u> :-</h3>

$\maltese$ As the block falls , the change in potential energy will be converted into kinetic energy

$\leadsto$ Potential Energy at rest at height, $h_2$ = $\sf mgh_2$

$\leadsto$ Potential Energy when fell at height, $h_1$ = $\sf mgh_1$

$\\$

$\leadsto$ Kinetic energy= Change in Potential energy = = $\sf mgh_2-mgh_1$

$\begin{gathered}\implies\quad \sf mg(h_2-h_1) \\\end{gathered}$

$\begin{gathered}\implies\quad \sf mg(53.0-21.3) \\\end{gathered}$

$\begin{gathered}\implies\quad \sf 3.59 \times 9.8\times (53.0-21.3) \\\end{gathered}$

$\begin{gathered}\implies\quad \sf 3.59 \times 9.8\times 31.7\\\end{gathered}$

$\begin{gathered}\implies\quad \boxed{\sf{1115.2\: Joules}}\\\end{gathered}$

7 0

3 years ago