Q1. How are simple machines useful to us?
Q2. Define the term Simple Machine and how are they different from complex machine?
Q3. Peter is holding a string which is tied to a toy car. How can he make the car move?
1 by pulling the string 2 by pushing the string 3 by pushing or pulling the string 4 the car cannot be moved by pushing or pulling the string
Q4. If force is applied on an object, which of the following effects will be visible?
1 only a change in direction of motion of the object 2 only a change in speed of the object 3 only a change in shape of the object 4 Any of the above effects may be visible.