Question 2
In the following example, try to identify the number of times the velocity of the ball changes: "A football player kicks a football to another player of his team who kicks the football towards the goal. The goalkeeper of the opposite team collects the football and kicks it towards a player of his own team". Also identify the agent supplying the force in each case.

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Solution

The velocity of football changes four times. First, when a football player kicks to another player, second when that player kicks the football to the goalkeeper. Third when the goalkeeper stops the football. Fourth when the goalkeeper kicks the football towards a player of his own team.
Agent supplying the force:
$\to$ First case – First player
$\to$ Second case – Second player
$\to$ Third case – Goalkeeper
$\to$ Fourth case – Goalkeeper

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Similar questions

Q. Question 2
In the following example, try to identify the number of times the velocity of the ball changes: "A football player kicks a football to another player of his team who kicks the football towards the goal. The goalkeeper of the opposite team collects the football and kicks it towards a player of his own team". Also identify the agent supplying the force in each case.

In the following example, try to identify the number of times the velocity of the ball changes:

“A football player kicks a football to another player of his team who kicks the football towards the goal. The goalkeeper of the opposite team collects the football and kicks it towards a player of his own team”.

Also identify the agent supplying the force in each case.

In the following example, try to identify the number of times the velocity of ball changes:

'A football player kicks a football to another player of his team who kicks the football towards the goal. The goalkeeper of the opposite team collects the football and kicks it towards a player of his own team.'

Q. Answer the following questions:

1) In the following example, try to identify the number of times the velocity of the ball changes :
" A football player kicks a football to another player of his team who kicked the football towards the goal. The goalkeeper of the opposite team collects the football and kicks it towards a player of his own team."
Also identify the agent supplying the force in each case.

2) Explain why some of the leaves may get detached from a tree if we vigorously shake its branch.

3) Why do you fall in the forward direction when a moving bus brakes to a stop and fall backwards when it accelerates from rest?

In a game of football, if a player kicks the ball into opponent's goal post then he scores a goal. If he passes the ball to any of his team mates and that particular team mate scores a goal after that, the player is said to have assisted the goal. Suppose you are the captain of a football team and you have to select a striker for your team. Here you have line graphs which give the goals and assists of two players in past 5 months. Which player will you select for your team? (Assume matches played by both the players had same level of competition)

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