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2 years ago

How large a force is required to accelerate a 1300 kg car from rest to a speed of 20 m/s in a distance of 80 m?

Engineering

2 answers:

topjm [15]2 years ago

7 0

F=m*a

F=80*20

F =1600 ans"

Stolb23 [73]2 years ago

5 0

Answer: basically we are asked to find it's force and the formula that helps us to find force is Force= Mass× Acceleration

so let's put out the given and what we need to find

GIVEN. Solution

F=m.a

Mass= 1300. F=1300kg×20m/s

speed (Acceleration)=20m/2. F=26000Kg.m/s

Force=? F=26000N

N stands for Newton and the reason that it comes Newton is because it is the SI-unit of Force and the result of kg×m/s.

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Answer:

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2 years ago

A rocket is launched from rest with a constant upwards acceleration of 18 m/s2. Determine its velocity after 25 seconds

lisabon 2012 [21]

Answer:

The final velocity of the rocket is 450 m/s.

Explanation:

Given;

initial velocity of the rocket, u = 0

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The final velocity of the rocket is calculated with the following kinematic equation;

v = u + at

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2 years ago

Is 4/8 bigger than 8/12 ?

Lostsunrise [7]

Is 4/8 bigger than 8/12 ? no

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2 years ago

Read 2 more answers

The flow between two infinitely flat parallel plates displays a parabolic profile, and is called plane Poiseulle flow.

murzikaleks [220]

Answer:

a. True

Explanation:

The study of fluids in a state of rest or in motion and the forces involved in it is called fluid mechanics. Fluid mechanics has a wide range of applications in the field of mechanical engineering as well as civil engineering.

When we study the flow of fluid between any two flat plates that is indefinitely flat and is parallel, the flow of the fluid is known as plane Poiseulle flow. The profile of a plane Poiseulle flow is parabolic.

The velocity profile of a plane Poiseulle flow is :

$\frac{u(y)}{U_{max}}=1-\left(\frac{2y}{h}\right)^2$

Thus the answer is TRUE.

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2 years ago