3 years ago

Which of the three objects is the largest? Explain your answer.

Physics

1 answer:

Marizza181 [45]3 years ago

6 0

Answer:

isn't it the first one

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An object moves 20 m east in 30 s and then returns to its starting point taking an additional 50 s. If west is chosen as the pos

user100 [1]

Answer:

v = 0.5 m/s.

Explanation:

Total distance, d = 20 m + 20 m = 40 m

Total time taken, t = 30 s + 50 s = 80 s

The average speed of an object is the total distance divided by time taken. So,

$v=\dfrac{40}{80}\\\\=0.5\ m/s$

So, the average speed of the object is 0.5 m/s.

7 0

2 years ago

Need asap!

Genrish500 [490]

Answer:

3.0 A Is the correct option

Explanation:

I = V / R

I = 12/ 4

= 3

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2 years ago

A Dodge Stealth is driving at 70 mph on a highway. It passes a BMW going the same direction. The BMW is moving 7 mph backward re

Tasya [4]

A Dodge Stealth is driving at 70 mph on a highway. It passes a BMW going the same direction. The BMW is moving 7 mph backward relative the Dodge. 63 mph is the velocity of the BMW

Answer: Option A

<u>Explanation:</u>

Given is the speed of the dodge stealth as 70 mph passing by the BMW moving with 7 mph relative to Dodge. Thereby, to calculate the velocity of BMW, relative velocity concept has to be employed.

As we know that the relative velocity tells us about relative velocity of mobile reference system as the difference or sum of the initial reference system.

Therefore,

velocity of the BMW = $v_{b}$