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Dafna11 [192]
3 years ago
7

If we want to know the velocity that an object is traveling, we must know the (2 points)

Physics
2 answers:
Rama09 [41]3 years ago
8 0
You must know the initial velocity (u), the acceleration (a) and the time (t) because the formula for velocity is: v=u+at

Hope this helps :)
Murljashka [212]3 years ago
5 0
Displacement the object traveled (distance) and the time it took to get there. V=D/T
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Marina CMI [18]
(100, 108)
Due to
1.2x90=108

100, 108
7 0
3 years ago
Materials have unique properties because each one is made up of different kinds of which particle?
4vir4ik [10]

Answer:

atoms

Explanation:

All  matter is made of elementary particles called "atoms".

4 0
4 years ago
If a person (weighs 70kg) jumped of a moving car (at 100km/h) and fell on asphalt what is the amount of force applyied to his bo
jok3333 [9.3K]

Answer:

The amount of force applied to his body is 1944.44 N

<em>The chances of the person dying is very high owing to the high impact force with which the person would experience when he or she lands on the asphalt road due to the jump out of the moving car.</em>

Explanation:

We all know that,

F = Ma where,

F = Force

M = weight of the person

a = acceleration or velocity of the moving car

Therefore;

F = { 70 x (100 x 1000) } / [3600]

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= <u>1944.44 N</u>

6 0
3 years ago
Một sóng cơ học có tần số 50hz lan truyền dọc theo một sợi dây rất dài biết rằng sau 5 giây sóng truyền được 1 đoạn 25m dọc theo
Oliga [24]

Answer:

10 cm

Explanation:

Được

Tần số = 50 hertz

Khoảng cách đã đi = 25 m

Thời gian đi quãng đường 25 m = 5 giây

Tốc độ của sóng = 25/5 = 5 mét trên giây

Như chúng ta biết

Bước sóng = Vận tốc / tần số

Bước sóng = 5 mét trên giây / 50 trên giây

Bước sóng = 0,1 m = 10 cm

3 0
3 years ago
3. Explain why one side of the single magnet attracted the metal surface, but repelled the stack of magnets
valina [46]

Answer:

Explained

Explanation:

one side of the single magnet attracted the metal surface, but repelled the stack of magnets because  magnet's both poles  try to attract by inducing opposite pole on the metal surface,but the pole closer to the metal is able to induce more magnetic character .so, attractive force due to this is more strong as the distance is also less as compared to the other pole.

7 0
3 years ago
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