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Anika [276]
2 years ago
11

Enny and Anne wanted to see who could throw a ball the hardest. They decided to each throw a ball against a wall as hard as they

could and measure how far the ball rolled away from the wall.
Out of the variables that need to be controlled in this experiment, propose how you might control them.
Physics
1 answer:
mihalych1998 [28]2 years ago
4 0

Answer:

wha t kind of variables

independent variables

dependent variables

controled variables

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Giving lots of points
bekas [8.4K]

Answer:

wind turbine

Explanation:

5 0
3 years ago
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Sound waves travel at the rate of 343 m/s at 20°C. If a man standing 450 meters away from the wall of a canyon yells, “Hello,” h
nekit [7.7K]

Answer:

2.62seconds

Explanation:

Speed is defined as the ratio of the distance covered by a body with respect to time.

Speed v = Distance (s)/Time (t)

For a traveling sound wave, the distance between the source of a sound and the reflector is '2S'.

Speed v = 2 × distance (S)/Time (T)

V = 2S/t

2S = vt

Given speed of the wave = 342m/s

Distance covered = 450m

t = 2S/v

t = (2×450)/343

t = 900/343

t = 2.62seconds

It will take him 2.62seconds for him to hear his own voice echo off of the wall.

5 0
3 years ago
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What type of stress is caused by two tectonic plates sliding past one another
prisoha [69]
Extensional stress. is your answer.
5 0
3 years ago
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7. What is the velocity of an object that has a mass of 4.5 kilograms and
labwork [276]

Answer:

266.66 m/s

Explanation:

p=mv

1200=4.5v

v=266.66 m/s

7 0
3 years ago
FORMULA PLEASE AND explINATION
Alex_Xolod [135]

2 Newtons to the right.

3 newtons are needed to over come the friction. There are 2 left over.

So the answer is 2 newtons to the right.

5 - 3 = 2

7 0
3 years ago
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