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Hunter-Best [27]
3 years ago
7

Which object will have greater acceleration? Why?​

Physics
1 answer:
dexar [7]3 years ago
7 0

Answer:

Object D

Explanation:

Use Newton's Second Law to determine the acceleration that each object has.

  • F = ma

The force applied in both cases is 50 N, but the mass for object C and object D is different.

Let's start with object C first:

  • F = ma
  • 50 N = 10 kg · a
  • 50 = 10a
  • 5 = a

The acceleration object C undergoes is 5 m/s².  

Now let's calculate object D next:

  • F = ma
  • 50 N = 2 kg * a
  • 50 = 2a
  • 25 = a

The acceleration object D undergoes is 25 m/s².

Object D has greater acceleration because it has a smaller mass. The object with a smaller mass will accelerate more in order to satisfy Newton's 2nd Law.

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Oduvanchick [21]

Answer:

28.1 m/s

Explanation:

u_x = Initial velocity of the fish = 1.52 m/s

y = Height of the bird = 40 m

a_y = Acceleration in y axis = 9.81\ \text{m/s}^2

u_y = Initial velocity in y axis = 0

y=u_yt+\dfrac{1}{2}a_yt^2\\\Rightarrow 40=0+\dfrac{1}{2}\times 9.81t^2\\\Rightarrow t=\sqrt{\dfrac{40\times 2}{9.81}}\\\Rightarrow t=2.86\ \text{s}

v_y=u_y+a_yt\\\Rightarrow v_y=0+9.81\times 2.86\\\Rightarrow v_y=28.057\ \text{m/s}

The final velocity in x direction will remain the same as the initial velocity as there is no acceleration in the x direction u_x=v_x=1.52\ \text{m/s}

Resultant velocity is given by

v=\sqrt{v_x^2+v_y^2}\\\Rightarrow v=\sqrt{1.52^2+28.057^2}\\\Rightarrow v=28.1\ \text{m/s}

The fish is moving at a velocity of 28.1 m/s when it hits the water.

6 0
3 years ago
What are four metals other than iron that can be made to exhibit magnetic properties? Fill in the blank. Every magnet has ______
Morgarella [4.7K]

Answer:

Four metals other than iron that can be made to exhibit magnetic properties are nickel, cobalt, manganese, and chromium.

two

neutral region

north

magnetic

Explanation:

PennFoster

4 0
4 years ago
Please help me ..im begging you​
Deffense [45]

Explanation:

let's assume that:

v1= 600ml=0,6l

T1=27°C= 300K

p1=700mmHG=93326Pa

T2=-20°C=253K

p2=500mmHg=66661

V2=?

p1V1/T1=p2V2/T2 => V2=p1V1T2/p2

V2= 93326*0,6*253/66661

V2=212,52l

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3 years ago
Una mujer de 65 kg, se balancea sobre uno de los tacones de sus zapatos. Si el tacón es circular con un radio de 0,5 cm, ¿qué pr
goldenfox [79]
Explicacion

m = 65 kg

g = 10 m/s²

r = 0.5 cm (1m / 100 cm) = 0.05 m

A = π r² = π (0.05 m)² = 0.00785 m²

F =W = m g = 65 kg(10 m/s²) = 650 N

P = F/A = 650 N / 0.00785 m² = 82802.54 N/m²
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