What You Need: ping pong ball or any ball of the same size, blanket and timer
What to Do:
1. With a little force, roll the ball over the smooth floor at any part of your house near a wall. Use the timer for you to tell the number of seconds as the ball reaches the wall. Write your
observation in the table below.
2. On the same spot, put a blanket and roll the ball again. Observe and write the number of
seconds it reaches the wall.
Number of Seconds the Ball Reaches the Wall Over a
Smooth Floor
Answer the following:
Number of Seconds the Ball Reaches the Wall Over a Blanket
1. What are the materials that you used in the activity?
2. On what surface did the ball roll faster?
3. What can you say about the surface where the ball rolled faster? Is it smooth or rough?
4. In what surface do you think the friction is higher or where there is more friction?
5. How will you describe the surface where the ball rolled slower?
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Answer:
Number of Seconds the Ball
Reaches the Wall Over a
Smooth Floor: 8 Seconds
Number of Seconds the Ball
Reaches the Wall Over a
Blanket: 7 Seconds
1. What are the materials that you used in the activity?
Ping pong ball or any ball, blanket and timer
2. On what surface did the ball roll faster?
Smooth Floor
3. What can you say about the surface where the ball rolled faster?
Fast
Is it smooth or rough?
Smooth
4. In what surface do you think the friction is higher or where there is more friction?
The friction is higher
5. How will you describe the surface where the ball rolled slower?
A ball rolling on the ground slows down due to the force of friction.
I hope it helps