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Gwar [14]
3 years ago
14

A child has a toy car on a horizontal platform. The car starts from rest and reaches a maximum speed in 4 s. If the mass of the

car is
0.1 kg and engine has an effective pull of 0.4 N Find the acceleration of the car.​
Physics
2 answers:
dmitriy555 [2]3 years ago
7 0

Answer:

a=4m/s²

Explanation:

F=ma

0.4=0.1a

Morgarella [4.7K]3 years ago
3 0

Answer:

a=4m/s

Explanation:

F=ma

0.4=0.1a

\frac{0.4}{0.1}   =  \frac{0.1}{0.1}

a =4m/ s

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4 0
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5 0
3 years ago
A boat race runs along a triangular course marked by buoys A, B, and C. The race starts with the boats headed west for 3700 mete
ale4655 [162]

Answer:

The  last two bearings are

49.50° and 104.02°

Explanation:

Applying the Law of cosine (refer to the figure attached):

we have

x² = y² + z² - 2yz × cosX

here,

x, y and z represents the lengths of sides opposite to the angels X,Y and Z.

Thus we have,

cos X=\frac{x^2-y^2-z^2}{-2yz}

or

cos X=\frac{y^2 + z^2-x^2}{2yz}

substituting the values in the equation we get,

cos X=\frac{2900^2 + 3700^2-1700^2}{2\times 2900\times 3700}

or

cos X=0.8951

or

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similarly,

cos Y=\frac{1700^2 + 3700^2-2900^2}{2\times 1700\times 3700}

or

cos Y=0.649

or

Y = 49.50°

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The bearing of 2 last legs of race are angels Y and Z.

7 0
3 years ago
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