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adell [148]
4 years ago
5

What is a normal force?

Physics
1 answer:
Flauer [41]4 years ago
3 0
Is the component perpendicular to the surface on contact  of the  contact force  <span />
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The 1.5kg ball is launched straight upward with an initial velocity of 7m/s. What is the maximum height it will reach?​
Temka [501]

Answer:

h = 2.5 m

Explanation:

Given that,

Mass of a ball, m = 1.5 kg

Initial velocity of the ball, u = 7 m/s

We need to find the maximum height reached by the ball. Let it is be h. Using the conservation of energy to find it such that,

mgh=\dfrac{1}{2}mu^2\\\\h=\dfrac{u^2}{2g}

Put all the values,

h=\dfrac{7^2}{2\times 9.8}\\\\=2.5\ m

So, it will reach to a height of 2.5 m.

8 0
3 years ago
anice measured the mass and the volume of an object. She then determined the density of the object by dividing the object’s mass
Debora [2.8K]
<h2>Answer:  g/cm³</h2>

Explanation:

Since mass is being divided by volume, the units must also represent this ratio. Since mass can be given in grams and volume in cubic centimeters, then g/cm³ is the likely answer in this case.

3 0
3 years ago
Read 2 more answers
Current X is 2.5 A and runs for 39 seconds. Current Y is 3.8 A and runs for 24 seconds. Which current delivered more charge, and
Aleonysh [2.5K]

Answer: B. Current x delivered 6.3 C more then Y

Explanation:

7 0
4 years ago
What is the object’s average acceleration between 0.0 s and 5.0 s? <br> ANSWER FAST! PLEASEE
Julli [10]

Answer:

2.5

Explanation:

0.0+5.0=5.0

\frac{5}{2} =2.5

hope this helps!!!!!!!!!!

3 0
3 years ago
Prove that the vectors A = 2i - 3j + k and B = i+ j+ k are<br><br>mùtually perpendicular<br>​
WARRIOR [948]

Explanation:

A • B = (2i - 3j + k) • (i + j + k)

= (2)(1) + (- 3)(1) + (1)(1)

= 0 = AB cos θ

∴ cos θ = 0 (as A ≠ 0,B ≠ 0)

or θ = 90°

or the vectors A and B are mutually perpendicular.

<u>-TheUnknown</u><u>Scientist</u>

8 0
3 years ago
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