2 years ago

A cars velocity on a straight highway increases uniformly from 20km/h to 70km/h in 0.008h. Find the acceleration in km/h2

Mathematics

2 answers:

anyanavicka [17]2 years ago

4 0

acceleration is change in velocity over time

acceleration = (final velocity – initial velocity) / Time

= (70km/h – 20km/h) / 0.008h

= 6250 km/h²

mark as brainliest plis

Bess [88]2 years ago

3 0

Answer:

a = 70 km/h - 20 km/h / 0.008 h = 50 km/h / 0.008 h = 6250 km/h²

You might be interested in

A 1.50 liter sample of dry air in a cylinder exerts a pressure of 3.00 atmospheres at a temperature of 25oC. Without change in t

cricket20 [7]

The answer is 4.5 l

To calculate this, we will use the Boyle's law using constant k, pressure P, and volume V:

PV = k

We can forget temperature since it is constant.

We have:

P1V1 = k

P2V2 = k

So, P1V1 = P2V2

P1 = 3 atm

V1 = 1.5 l

P2 = 1 atm

V2 = ?

_____

P1V1 = P2V2

3 atm * 1.5 l = 1 atm * V2

4.5 atm/l = 1 atm * V2

V2 = 4.5 atm l / 1 atm

V2 = 4.5 l

5 0

3 years ago

Read 2 more answers

Solve the equation for a.

Pavel [41]

Answer:

$\large\boxed{a=\dfrac{K}{4+9b}}$

Step-by-step explanation:

$K=4a+9ab\qquad\text{use the distributive property}\ a(b+c)=ab+ac\\\\K=a(4+9b)\qquad\text{divide both sides by}\ (4+9b)\neq0\\\\\dfrac{K}{(4+9b)}=\dfrac{a(4+9b)}{(4+9b)}\\\\\dfrac{K}{4+9b}=a$

6 0

3 years ago

Read 2 more answers

Which of these best describes a scientific theory

Sidana [21]

Answer:

Step-by-step explanation:

Have a good day i hope this helps :)

4 0

3 years ago

Find lim h 0 f(2+h)-f(2)/ h if(x)=x^ 2 .

jonny [76]

Answer:

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Evaluate the expression for x=5, y=-3 and z=7 *<br> 7 – 3y – 3z

kobusy [5.1K]

Answer:

-5

Step-by-step explanation:

i tried my best but this is the result

7 0

3 years ago