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ASHA 777 [7]
3 years ago
11

A force of 1500 pounds drags a truck 40 feet in 20 seconds. How much work is accomplished? How much power was required?

Physics
2 answers:
mixer [17]3 years ago
6 0

Answer:

The work done and power are 60000 Pounds-feet and 3000 Pounds-feet/sec.

Explanation:

Given that,

Force F = 1500 pounds

Distance d = 40 feet

Time t = 40 sec

Work done :

The work done is the product of the force and distance.

The work done is defined as,

W = F \times d

Where, W = work

F = force

d = distance

Put the value into the formula of work

W= 1500\times40

W = 60000\ Pounds-feet

Power:

The power is equal to the work done divided by time.

The power is defined as,

P = \dfrac{W}{t}

Where, P = power

W = work

t = time

Put the value into the formula of power

P = \dfrac{60000}{20}

P=3000\ Pounds-feet/s

Hence, The work done and power are 60000 Pounds-feet and 3000 Pounds-feet/sec.

svlad2 [7]3 years ago
4 0
Work = f x s = 1500 x 40
power = w/t = (1500 x 40) / 20
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When two sticks are laid end-to-end they cover a length of 8.32 feet. One stick is 2.93 ft longer than the other. What is the le
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To solve this problem we will start by defining the length of the shortest stick as 'x'. And the magnitude of the longest stick, according to the statement as

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Now solving for x we have,

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7 0
3 years ago
The gravitational force between two objects that
leonid [27]

Answer:

The answer to your question is    m₂ = 38.5 kg

Explanation:

Data

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Force = 3.2 x 10⁻⁶ N

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m₂ = ?

G = 6.67 x 10 ⁻¹¹ Nm²/kg²

Process

1.- To solve this problem use Newton's law of Universal Gravitation.

             F = G m₁m₂ / r²

-Solve for m₂

            m₂ = Fr² / Gm₁

2.- Substitution

            m₂ = (3.2 x 10⁻⁶)(2.1 x 10⁻¹)² / (6.67 x 10⁻¹¹)(55)

3.- Simplification

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5 0
3 years ago
A bullet with a mass m b = 11.5 g is fired into a block of wood at velocity v b = 249 m/s. The block is attached to a spring tha
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0.358Kg

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Using conservation of momentum between the bullet and the block

0.0115(265) = (M + 0.0115)v

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v = 3.0475/(M + 0.0115)

plugging into Energy equation

12.56 = 0.5(M + 0.0115)(3.0475)^2/(M + 0.0115)^2

12.56 = 0.5 × 3.0475^2 / ( M + 0.0115 )

12.56 = 0.5 × 9.2872/ M + 0.0115

12.56 = 4.6436/ M + 0.0115

12.56 ( M + 0.0115 ) = 4.6436

12.56M + 0.1444 = 4.6436

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4 0
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You carry a 5 kg sack of potatoes across the store for 5 minutes, and you wait in line holding it for 30 seconds before you get
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Answer:

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The force is given by the producto of the mass by the gravity.

F = 5 * 9.81 = 49.05 [N]

W = 49.05 * 1.6 = 78.48 [N]

3 0
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