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trasher [3.6K]
3 years ago
8

(Tennis)

Physics
1 answer:
GrogVix [38]3 years ago
4 0
A) A service winner; the opponent cannot return the serve

B) A tennis stroke made across the body with the back of the hand facing the direction of the stroke

C) Exercising to increase stamina; mostly associated with aerobic activities and cardiovascular health

D) When the ball does not land in the service box

E) Is the absolute range of movement in a joint or series of joints and muscles

F) A stroke done to the right-front of the body (for right-handers), with the racket in a normal position (palm of hand facing opponent)

G) When the service hits the net and lands in a let is played and the server gets another ball

H) A sequence of shots within a point

I) Position facing the net. Used to begin most tennis strokes

J) The way the game begins. Governed by a specific set of rules

K) A tennis stroke that creates a backspin on the ball

L) To exert force on an object using muscles

M) A tennis stroke made across the body with the back of the hand facing the direction of the stroke
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Calculate the normal force pushing up from the table in each example 8 kg
garik1379 [7]

The correct answer to the question is: 78.4 N.

EXPLANATION:

As per the question, the mass of the object is given as m = 8 Kg.

We are asked to calculate the normal force of the object.

The object is resting on the table.

Hence, the object pushes the table downward with a force equal to it's weight.

The table, in turn, pushes the object with the same force as given by the object, but in the upward direction.

The force given by the table on the object is known as the normal reaction of the object which acts perpendicular to the surface of the object.

Hence, the normal reaction is equal to the weight of the body.

The weight of a body is the product of it's mass with acceleration due to gravity.

So, the weight of 8 Kg object is calculated as -

Weight = mg

= 8 × 9.8 N.

= 78.4 N.

Here, g is known as acceleration due to gravity.

Hence, the normal force pushing up from the table is 78.4 N.







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