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ivanzaharov [21]
3 years ago
8

Why is net force a vector sum A.All forces have direction and magnitude B.Forces can only be attractive C.All forces are contact

forces D.There are four fundamental forces
Physics
1 answer:
Alexus [3.1K]3 years ago
3 0

Answer:

A

Explanation:

Forces are vector quantities because they have both magnitude and direction.

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During the first 50 s a truck traveled at constant speed of 25 m/s. Find the distance that it is traveled.
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Time=50s
speed=25m/s

Distance = speed×time
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DISTANCE TRAVELLED IS =1250m

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What is the wavelength of a 100 mhz radio signal?
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0.0135 kg of steam at 100°C is
lora16 [44]

Answer:

33333.35 kg

Explanation:

I got it right on Acellus, rounded to 33300 sigfigs

8 0
3 years ago
A cheetah can accelerate at 4.5 m/s from rest to a speed of 30.0 m/s. Calculatethe distance
anzhelika [568]

Answer:

d= 100m

Explanation:

Cheetah kinematic

The cheetah moves with uniformly accelerated movement, and the formulas that describe this movement are:

d= v₀*t + (1/2)*a*t²  Formula (1)

vf²=v₀²+2*a*d Formula (2)

vf=v₀+a*t  Formula (3)

Where:

d:distance in meters (m)  

v₀: initial speed in m/s  

vf: final speed in m/s  

a: acceleration in m/s²  

t: time in seconds (s)

Known Data

v₀ =0

a =  4.5 m/s²

vf= 30 m/s.

Problem development

We apply the formula (2) that has known data to calculate the distance :

vf²=v₀²+2*a*d

(30)²= 0 + 2*  4.5* d

d= \frac{900}{9}

d= 100m

8 0
3 years ago
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