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Troyanec [42]
2 years ago
10

You are piloting a plane traveling 160 km/h. A child is seated behind you in the airplane. Describe the speed of the child relat

ive to you, (you are the stationary object).
A. The child is accelerating faster than I am.

B. The child is traveling slower than I am

C. The child is traveling at 160 km/hr relative to me.

D. The child is traveling at 0 km/hr relative to me.
Physics
1 answer:
Elena-2011 [213]2 years ago
3 0

Answer:

C

Explanation:

they are still in the same plane witch means they going the same speed

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A velocity-time graph is shown below: (2 points)
BabaBlast [244]

Answer:

2m/s²

Explanation:

  • V=Vstart+at
  • rewrite that to find a so a=(V-Vstart)/t

part A of graph

  • a=(20m/s–0m/s)/5s
  • a=4m/s²

part B of graph

  • a=(0m/s–0m/s)/5s
  • a=0m/s²

the average between the two is both answers added divided by the number of answers

  • (4m/s²–0m/s²)/2
  • 4m/s²/2
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5 0
3 years ago
The automobile has a weight of 2700 lb and is traveling forward at 4 ft>s when it crashes into the wall. If the impact occurs
alex41 [277]

Answer:

F_b=153918\, lb.ft.s^{-2}

Explanation:

Given:

mass, m=2700 \,lb

time, t=0.06\,s

velocity, v=4\,ft.s^{-1}

coefficient of kinetic friction between wheels & pavement, \mu=0.3

According to first condition,

F\times \Delta t=m\times v

F\times 0.06= 2700\times 4

F=180000\,lb.ft.s^{-2}

According to second condition,

<u>Magnitude of frictional force (which acts opposite to the direction of motion):</u>

f=\mu.N

where N is the normal reaction.

f=0.3\times 2700\times 32.2

f=26082 \,lb.ft.s^{-2}

Now, the impulsive force on the wall if the brakes were applied during the crash:

F_b= F-f

F_b=180000-26082

F_b=153918\, lb.ft.s^{-2}

3 0
3 years ago
Which statement BEST describes the process of playing sports?
irina1246 [14]

Answer:

A

Explanation:

4 0
3 years ago
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A runner runs 300 m at an average speed of 3.0 m/s. She then runs another 300m at an average
Kaylis [27]

Answer:

B. 4 m/s

Explanation:

v=d/t

Running for 300 m at 3 m/s takes 100 seconds and running at 300 m at 6 m/s takes 50 seconds. 100 s + 50 s = 150 s (total time). Total distance is 600 m, so 600 m/ 150 s = 4 m/s.

3 0
4 years ago
How are you guys today? I'm just wasting points' to talk.
scoundrel [369]
I’m honestly bored & tiredddd
5 0
3 years ago
Read 2 more answers
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