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3 years ago

9

Jane slowly paddles her canoe across a calm lake. Explain what makes the boat moves forward. What principle best explains this s

ituation?

1 answer:

nalin [4]3 years ago

7 0

Janes paddles push on the water and the water pushes back on janes paddles.

Newtons 3. Law: Action = -Reaction

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Whats 6 3/7 ×1 5/9.

aniked [119]

6 3/7 * 1 5/9
45/7 * 14/9
630/63
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4 years ago

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Why is the recruitment and selection of staff the concern of all managers in an organization?

leva [86]

Answer:

Explanation:

It is a concern to managers in an organization because it is important for the organization to get the number and quality of staffs needed to attain the goals and objectives of the organization.

Selection and recruitment is also important in order to ensure the continuity of the company , it will also fulfills the organisations job requirements and also this provide a pool of employees in which the management will have to choose the right or best candidates for the job position.

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3 years ago

A shopper pushes a grocery cart 20.0 m at constant speed on level ground, against a 35.0 n frictional force. he pushes in a dire

alexandr1967 [171]

Work is calculated as the product of Force, Distance, and angular motion. In this case, the work done by gravity is perpendicular to the motion of the cart, so θ = 90°

and W=Fdcosθ

W=35.0 N x 20.0 m x cos90

W=0 J

This means that work done perpendicular to the direction of the motion is always zero.

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3 years ago

Which of the following is not part of the role of a forester?

Anastasy [175]

<span>the one that is not part of the role of a forester is: B/ prevent removal of timber Actually, it is okay to remove timbers and use it for production as long as we do it in a responsible manner. The role of a forester is to make sure that all the people that use the timbers do it within the pre-determined guideline</span>

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3 years ago

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You are standing on a skateboard, initially at rest. A friend throws a very heavy ball towards you. You can either catch the bal

harina [27]

To solve this problem we will apply the concept related to the moment, which describes the change in speed in proportion to the body mass. The momentum can be described under the general equation

$p = mv$

Where,

m = mass

v = Velocity

The change in momentum is the difference between the final moment and the initial moment

$\Delta p = p_f - p_i$

Where,

$p_f =$ Final momentum

$p_i =$ Initial momentum

After catching the ball, the ball comes to rest position and speed of the ball is zero.

$p_f = 0$

The change in momentum on catching the ball is

$\Delta p = 0 - mv$

$\Delta p = -mv$

The momentum during the catching of the ball is

$p_i = mv$

Now during deflection of the ball, we know that there is an initial momentum and a negative final momentum because it moves with the same speed but in the opposite direction, that is

$p_f = -mv$

The momentum is negative since during deflection the ball moves with same speed in opposite direction

$\Delta p = -mv-mv$

$\Delta p = 2-mv$

Therefore, the correct ansswer is B: catch the ball in order to minimize your speed on the skateboard

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3 years ago