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strojnjashka [21]
3 years ago
14

Please help! this is timed!

Physics
2 answers:
sweet-ann [11.9K]3 years ago
7 0
Im pretty sure it is the first answer
Alik [6]3 years ago
5 0

Answer:

I'm positive that it is the first one. Sorry if it wrong.

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4. What is the acceleration of a rock if the net
HACTEHA [7]

Answer:

0.75 m/s²

Explanation:

Newton's second law:

∑F = ma

3 N = (4 kg) a

a = 0.75 m/s²

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4 years ago
A man is pushing a heavy crate up an inclined plane (ramp) into the back of semi trailer. What can the man do to make it easier
strojnjashka [21]
Make the ramp longer

6 0
3 years ago
Read 2 more answers
The height of a tree is 4 m.
ryzh [129]

Answer:

1.2

Explanation:

4/100 × 30= 1.2

3 0
3 years ago
Explain how skeletal muscles work in pairs.<br><br> plzzzz answer asap !!
Olegator [25]

Answer:

it holds the bone and helps to move

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3 years ago
A jet plane is cruising at 300 m/s when suddenly the pilot turns the engines up to full throttle. After traveling 4.0 km, the je
jenyasd209 [6]
<h2>The answer got is reasonable.</h2>

Explanation:

We have equation of motion v² = u² + 2as

Initial velocity, u = 300 m/s  

Acceleration, a = ?

Final velocity, v = 400 m/s  

Displacement,s = 4 km = 4000 m

Substituting  

v² = u² + 2as

400² = 300² + 2 x a x 4000

a = 8.75 m/s² = 8.8 m/s²

The acceleration is 8.8 m/s²

The answer got is reasonable.

7 0
3 years ago
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