A train travels 73 kilometers in 3 hours, and then 60 kilometers in 3 hours. what is the average speed

1 answer:

5 0

The answer is 22.17 km/hr. The total distance would be the sum of the first 73 kilometers and the second distance 60 kilometers, and the time the train took to cover that distance would be the sum of the first 3 hours and the second 3 hours. Since the average speed of the train is the total distance it traveled divided by the elapsed time to cover that distance, we have
average speed = total distance/elapsed time
= (73km + 60km) / (3hr + 3hr)
= 133km / 6hr
= 22.17 km/hr

You might be interested in

"Forensic entomologists study what to help solve crimes?"

Licemer1 [7]

I believe the answer is flies since they study bugs, please get another opinion to be sure.

7 0

4 years ago

Read 2 more answers

What properties are different between blue light and red light?

Oksi-84 [34.3K]

Blue light has a shorter wavelength than does red light, and since it travels at the same speed (in vacuum) as red light, has a higher frequency. This gives it a higher energy per photon.

3 0

3 years ago

CAN SOMEBODY PLEASE HELP ME! i need help and i wanna pass

umka21 [38]

Answer:it would be C

Explanation:

8 0

4 years ago

ALWAYS use significant figure rules. Remember that these rules apply to all numbers that are measurements. You travel 20.0 mph f

timurjin [86]

The actual answer is 165 miles, but using significant figure rules the answer is 200. This is because the sig fig rules are as follows ...
<span>1. Non-zero digits are always significant.
2. Any zeros between two significant digits are significant.
<span>3. A final zero or trailing zeros in the decimal portion ONLY are significant.
</span></span>
So the zeroes in a number like 20 or 23,000 are NOT significant. When you add numbers you must find the addend with the lowest amount of significant figures and round the answer to that. In this case most of the addends only have one sig fig, so you round 165 to 200 to make it only have one sig fig.

5 0

4 years ago

Read 2 more answers

A neutron star is an extremely dense, rapidly spinning object that results from the collapse of a massive star at the end ofits

Westkost [7]

Answer:

(a). The rotational inertia is $5.72\times10^{39}\ kg m^2$