Question

Write true or false. 1) Wheel is made circular to maximize friction. 2) Submarine are made streamlined to reduce friction. 3) Sand is spread on slippery surface to reduce friction. 4) Space occupied by an object is called its surface area. 5) Length of a curved object can be measured by thread and ruler.​

Answer 1

Answer:

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Explanation:

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Answer 2

Answer:

1) Wheel is made circular to maximize friction.

Ans: False. A curved surface ha lesser contact area with the floor and decreases the friction.

2) Submarine are made streamlined to reduce friction.

Ans: True

3) Sand is spread on slippery surface to reduce friction.

Ans: True

4) Space occupied by an object is called its surface area.

Ans: False. Space occupied by an object is called its volume while the area of its surface (area in contact with air) is called its surface area.

5) Length of a curved object can be measured by thread and ruler.​

Ans: True

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