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labwork [276]
3 years ago
12

Ruby was training for a race at the high school track. She took her dog walked 2250 meters in 15 minutes. Calculate the average

speed
Physics
1 answer:
Sedbober [7]3 years ago
4 0

Answer:

Average speed = 2.5 meter per second

Explanation:

Given

The total distance walked = 2250 meters

The total time taken to walk 2250 meters is 15 minutes

In one minute there are 60 seconds

As we know Average speed is equal to total distance travelled divided by total time taken

Hence,

Average speed

\frac{2250}{15*60} \\2.5meter per second

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Answer:

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5 0
2 years ago
Which of the following answers is NOT an example of repetition?
Step2247 [10]

Answer:

the first one.

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3 years ago
a 65 kg skater at rest on a frictionless rink throws a 2 kg ball, giving the ball a velocity of 7 m/s. What is the velocity of t
gayaneshka [121]
The answer to your question is 33
8 0
3 years ago
A closed system’s internal energy changes by 178 J as a result of being heated with 658 J of energy.
statuscvo [17]
Internal energy of the system changes by ΔE = 178 J.
Heat given to the system = Q = +658 J.

According to the first law of thermodynamics, 
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178 = 658 + W 
∴ W = 178-658 = -480 J

Minus sign indicates that work is done by the system. 
7 0
3 years ago
Read 2 more answers
An object has a mass of 10 kilograms and is accelerating at 5 m/s/s, what force pushed the object?
Katen [24]

Answer:

force pushed the object = 10 × 5 = 50N

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2 years ago
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