Question

Read the following paragraph and answer the questions.
A push or pull on an object is defined as a force. Forces which involve physical contact
between two bodies on which they act are known as contact forces example muscular
force frictional force etc. Forces which do not involve physical contact between two
bodies on which they act are known as non contact forces example gravitational force
electrostatic force magnetic force etc.
Q1. Write the situations in which muscular force is used. (hint: while lifting any object )
Q2. Define force
Q3. What is contact forces?
Q4. What is non contact forces?
Q5. Give examples of contact and non contact forces.

Answer 1

Answer:

1) kicking a ball

2) a push or pull on an object is defined as a force

3) force which involves physical contact

4) force which does not involves physical contact

5) contact force =ploughing a field

non contact force=falling of an apple from a tree

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Answer 2

Answer:

Explanation:

 1 kicking a ball ,Lifting baggage and riding a cycle

 2force is A push or pull on an object

 3contact forces are Forces which involve physical contact

 4A non-contact force is a force which acts on an object without coming physically in contact with it

5 examples of contact forces are friction  and muscular force

  example of  non contact forces are magnetic force and gravitational force