3 years ago

At an average speed of 12 m/s , how many kilometers can a cyclist travel in a 10 hour day?

Physics

1 answer:

loris [4]3 years ago

5 0

Answer:

432 km = 432000 m

Explanation:

Primeiro, vamos converter m/s para km/h:

12 m/s = (12 . 3,6)km/h = 43,2 km/h

Agora é só descobrir a distancia que ele percorre em 10 h:

s=43,2.10 = 432 km

Aí se você quiser colocar na medida do Sistema Internacional:

You might be interested in

What is the wavelength of a radar signal that has a frequency of 27 GHz? The speed of light is 3 × 108 m/s. Answer in units of m

marusya05 [52]

Explanation:

speed of light= c

wave length= L

frequency= f

c=Lf → L= c/f → L= 3 × 10⁸/ 27 × 10⁹ → L = 1/90 ≈ 0.011 m

4 0

2 years ago

Certain rifles can fire a bullet with a speed of 950 m/s just as it leaves the muzzle (this speed is called the muzzle velocity)

TiliK225 [7]

Answer:

a) By $v^2 = u^2 + 2as$ => a= 70291.70.

(b)By $v = u + at$ => t= 1.58 ms.

(c)By $v^2 = u^2 - 2gh$ => H = 46045.92 m.

Explanation:

a) By $v^2 = u^2 + 2as$

$(950)^2 = 0 + 2 \times a \times 0.75\\a = 601666.67 m/s^2\\a/g = 688858.70/9.8 = 70291.70$

(b)By $v = u + at$

$950 = 0 + 601666.67 \times t\\t = 1.58 x 10^-3 sec = 1.58 ms$

(c)By $v^2 = u^2 - 2gh$

$0 = (950)^2 - 2 \times9.8 \times H\\H = 46045.92 m$

4 0

3 years ago

Explain how you can improve the accuracy of a measurement. <br>

yKpoI14uk [10]

You use more significant figures. 5 sigfigs (1.0985) is more accurate than 2 sigfigs (1.0)

8 0

2 years ago

Read 2 more answers

A person on a merry go round is constantly changing direction

Salsk061 [2.6K]

Answer: yurp

Explanation:

because its spinning

7 0

3 years ago

Read 2 more answers

An object is accelerating if there is a change in speed and/or ________.

Alexxx [7]

A change in C. Direction.

6 0

3 years ago

Read 2 more answers