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Softa [21]
3 years ago
11

An ant sits on the back of a mouse. The mouse carries the ant across the floor for a distance of 150m to her bedroom. How much w

ork did the mouse do?
Physics
1 answer:
marin [14]3 years ago
8 0

Answer:

Since the weight of the ant is not given, we cannot determined the work done.

Explanation:

Given parameters:

Distance covered  = 150m

Unknown:

Work done by mouse  = ?

Solution:

To solve this problem, we need to understand that work done is the force applied to move a body through a certain distance.

In this case, work done;

    Work done  = force x distance

     Work done  = Weight x distance

Since the weight of the ant is not given, we cannot determined the work done.

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Answer: accretion......

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Plz help..During takeoff a plane accelerates at 4m/s^2 and takes 40s to reach takeoff speed.
matrenka [14]

Answer:

The velocity of the plane at take off is 160 m/s.

The distance travel by the plane in that time is 3200 meter.

Explanation:

Given:

Acceleration, a = 4 m/s²

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u = 0 i .e initial velocity

To Find:

velocity , v = ?

distance , s =?

Solution:

we have first Kinematic equation

v = u + at

∴ v = 0 + 4×40

∴ v = 160 m/s

Now by Third Kinematic equation

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Explanation:

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2 years ago
A 3.0 kg rifle is held firmly by a 50.0 kg woman, initially standing still. A 0.06 kg bullet leaves the rifle muzzle with a velo
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Train cars are coupled together by being bumped into one another. Suppose two loaded train cars are moving toward one another, t
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Answer:

0.243 m/s

Explanation:

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Where m = mass of the first car, m' = mass of the second car, initial velocity of the first car, u' = initial velocity of the second car, V = Final velocity of both cars.

make V the subject of the equation

V = (mu+m'u')/(m+m')................. Equation 2

Given: m = 260000 kg, u = 0.32 m/s, m' = 52500 kg, u' = -0.14 m/s

Substitute into equation 2

V = (260000×0.32+52500×(-0.14))/(260000+52500)

V = (83200-7350)/312500

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8 0
3 years ago
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