I observed Mr.Roman spinning a helmet on the table, eventually the helmet slowed down due to the friction between the two surfaces, the helmet and the table.
When pushing Brenda on the rolling chair and her feet being on the ground, this extra surface area of her feet made me have to increase the amount of force I pushed her with compared with me pushing her with her feet off the ground with less surface are on the ground generating less friction.
It was harder for Richard to wheel himself around the room than it was for Mo to wheel himself around the room. This was due to friction (the floor and the wheels), mass (each boy in his respective chair), and force (each boy's respective strength an ease at moving his own mass).
It is harder to slide your hand across a table when it is flat opposed to sliding just your fingers because there is less friction due to the fact that there is less surface.
As people rolled around in the chairs, each one slowed down significantly faster when they put their feet on the ground, this is due to the friction of their feet hitting against the floor.
Skateboard wheels (polyurethane) roll faster on concrete than on wood. This means that there is more friction between the wheels and the wood than there is between the wheels and concrete.
The fingerprint scanner on the new iPhone 5S scans a person's fingerprint and grants them access to the phone based on contours of the person's finger.
If you roll the board on the fake grass opposed to the smooth floor, it would go slow or stop because of the increased friction between the smooth wheel and hard material.
The chairs in the classroom could not move as well on the grass carpet than on the normal ground because there is more friction. Thus, the rough surface makes us move slower.
When a swimmer dives in a pool they gradually come to a stop underwater, because the waters comes into contact with the swimmer creating friction causing the swimmer to stop moving forward.
When a volleyball is airborne, putting a top-spin on the ball can reduce that time. The friction resulting between the ball and the air manipulates the air into going in the direction that the ball is spinning.
In one of the friction experiments, I observed that it is much more difficult to glide your open hand across a table versus gliding solely your fingertips due to the fact that there is less of your hand touching the table; thus, there is less friction.
I observed Mr.Roman spinning a helmet on the table, eventually the helmet slowed down due to the friction between the two surfaces, the helmet and the table.
ReplyDeleteIt's harder to slide an iPhone on its face than it is on it's back. More friction between the face of the iPhone and the table.
ReplyDeleteIf you rub something it creates heat. Friction
ReplyDeleteWhen I was driving, I pressed on the break causing friction between the tire and the car. Which caused the tire to come to a stop
ReplyDeleteSteve added more force when he pushed both of us, as oppose to just himself.
ReplyDeleteWhen pushing Brenda on the rolling chair and her feet being on the ground, this extra surface area of her feet made me have to increase the amount of force I pushed her with compared with me pushing her with her feet off the ground with less surface are on the ground generating less friction.
ReplyDeleteWhen I pushed Neely around the room, he went smoother on the ground and faster, but when we went on the astroturf he slowed down quickly.
ReplyDeleteIt was harder for Richard to wheel himself around the room than it was for Mo to wheel himself around the room. This was due to friction (the floor and the wheels), mass (each boy in his respective chair), and force (each boy's respective strength an ease at moving his own mass).
ReplyDeleteIt is harder to slide your hand across a table when it is flat opposed to sliding just your fingers because there is less friction due to the fact that there is less surface.
ReplyDeleteAs people rolled around in the chairs, each one slowed down significantly faster when they put their feet on the ground, this is due to the friction of their feet hitting against the floor.
ReplyDeleteSkateboard wheels (polyurethane) roll faster on concrete than on wood.
ReplyDeleteThis means that there is more friction between the wheels and the wood than there is between the wheels and concrete.
The fingerprint scanner on the new iPhone 5S scans a person's fingerprint and grants them access to the phone based on contours of the person's finger.
ReplyDeleteI observed the surface of my hand rubbing against the surface of the desk which created heat.
ReplyDeleteIf you roll the board on the fake grass opposed to the smooth floor, it would go slow or stop because of the increased friction between the smooth wheel and hard material.
ReplyDeleteIf you rub your hands together really quickly, your hands heat up.
ReplyDeleteWhen your driving and your coasting, the wheels and the road have friction
ReplyDeleteThe chairs in the classroom could not move as well on the grass carpet than on the normal ground because there is more friction. Thus, the rough surface makes us move slower.
ReplyDeleteWhen you rub your hand together quickly, it causes friction because of the quick movement back and forth and also heat.
ReplyDeleteWhen a swimmer dives in a pool they gradually come to a stop underwater, because the waters comes into contact with the swimmer creating friction causing the swimmer to stop moving forward.
ReplyDeleteWhen you roll a penny and watch it drop, the friction of the air and the rolling resistance slows the penny down.
ReplyDeleteWhen a volleyball is airborne, putting a top-spin on the ball can reduce that time. The friction resulting between the ball and the air manipulates the air into going in the direction that the ball is spinning.
ReplyDeleteIn one of the friction experiments, I observed that it is much more difficult to glide your open hand across a table versus gliding solely your fingertips due to the fact that there is less of your hand touching the table; thus, there is less friction.
ReplyDelete