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Fantom [35]
4 years ago
13

You are walking down a straight path in a park and notice there is another person walking some distance ahead of you. The distan

ce between the two of you remains the same, so you deduce that you are walking at the same speed of 1.25 m/s. Suddenly, you notice a wallet on the ground. You pick it up and realize it belongs to the person in front of you. To catch up, you start running at a speed of 2.75 m/s. It takes you 12.5 s to catch up and deliver the lost wallet. How far ahead of you was this person when you started running
Physics
1 answer:
sveta [45]4 years ago
5 0

Answer:

18.8m

Explanation:

This implies calculating the relative speed first then find the distance d

So

relative speed = 2.75- 1.25 = 1.5 m/s

So assume the distance between them to be say d

so, d/1.5= 12.5

d = 18.8m

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A man is flying in a hot-air balloon in a straight line at a constant rate of 5 feet per second, while keeping it at a constant
icang [17]

Answer:

x = 220.85 ft

Explanation:

Let at any moment of time the friend's car is at some horizontal distance "x" from the position of balloon.

Now if the altitude of the balloon is fixed and it is at height "h"

so here we will have

tan \theta = \frac{h}{x}

now we know that

initially the angle of the friend's car is 35 degree

so the horizontal distance will be

x_1 = h cot35

similarly if the angle after passing the car position is 36 degree

then we have

x_2 = h cot36

now the speed of the balloon is constant

so we have

v = \frac{x_1 + x_2}{\Delta t}

5 ft/s = \frac{h cot35 + h cot36}{90 s}

5 ft/s = \frac{2.8h}{90}

h = 160.45 ft

so the final position of friend when the angle is 36 degree

x = \frac{h}{tan36}

x = \frac{160.45}{tan36}

x = 220.85 ft

4 0
3 years ago
True or false? When an object deforms, the change of shape is always permanent.<br> false<br> true
Alik [6]
True. Because say if you go to a junk place where you can break anything and you decide to squish a printer with a car and when you go look at the printer it’s all deformed there’s really no way that you can fix it. Lol that was an example
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The bands on Jupiter are ultimately caused by...
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7 0
3 years ago
Two long, parallel wires are separated by 2.2 mm. Each wire has a 32-AA current, but the currents are in opposite directions. Pa
Alex

Answer:

B=1.1636*10^{-3}T

Explanation:

Given data

d_{wires}=2.2mm=0.022m\\ I_{current}=32A\\

To find

Magnitude of the net magnetic field B

Solution

The magnitude of the net magnetic field can be find as:

B=2*u\frac{I}{2\pi r}\\ B=2*(4\pi*10^{-7}  )\frac{32}{2\pi (0.022/2)} \\ B=1.1636*10^{-3}T

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Diano4ka-milaya [45]

Answer:

True

Explanation:

6 0
3 years ago
Read 2 more answers
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