3 years ago

What is an example of speed?

1 answer:

5 0

<span>The speed is a scalar quantity which by definition is the distance traveled per unit of time. Unit for speed is: km/h. (how many km the object is moved for one hour) or mph (miles per hour).
From the given option D. A dog runs an average 8 mph. (this means that a dog is moving 8 miles per hour).

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Korvikt [17]

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3 years ago

A car traveled a distance of 80 km in 45 minutes (0.75 hours). What was the speed of the car? A. 60 km/hr B. 35 km/hr C. 26 km/h

pshichka [43]

Answer:

The answer is 107 km/hr

8 0

3 years ago

10. A boy weighs 475 N. What is his mass? (acceleration due to gravity on Earth is 9.8m/s2 = g)

Darya [45]

Answer: mass = 48.47 kg.

Explanation:

Formula : Weight = mg , where m = mass of body , g= acceleration due to gravity .

Given: Weight = 475 N

$g= 9.8\ m/s^2$

Substitute all values in formula , we get

$475= m \times9.8\\\\\Rightarrow\ m = \dfrac{475}{9.8}\\\\\Rightarrow\ m \approx 48.47\ kg$

Hence, his mass = 48.47 kg.

7 0

3 years ago

An automobile travels a displacement of 75 km 45° north of east. How far east does it travel and how far north does it travel?

Alisiya [41]

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4 0

3 years ago

What is the equivalent resistance if you connect three 10.0 resistors in parallel?

Lynna [10]

Answer:

3.33 ohms

Explanation:

Parallel circuit :

1/Rtotal= 1/R1 + 1/R2 + 1/R3

1/Rtotal= 1/10 + 1/10 + 1/10

1/Rtotal=3/10

Therefore it Rtotal= 10/3=3.33 ohms

7 0

4 years ago