What makes a CO2 car go fast?
Aerodynamics, thrust-to-weight ratio, surface drag, rolling resistance and friction–all play a role in what makes a CO2 car fast or slow.
What 2 things can you do to reduce drag?
10 Good Ways to Reduce Frontal Drag:
- Keep the body aligned.
- Keep the head down.
- Pull underwater with a high elbow.
- Wear the fastest technology racing suit possible.
- Shave all the hair from your body.
- Streamline off the start and all turns.
- Keep your kick tight.
- Double cap.
How do you reduce drag in class 8?
The fluid friction or drag can be reduced are minimised by giving special shape called streamlined shape to the objects which Move through fluids like air or water .
How we can reduce friction?
There are various ways to reduce friction:
- By using lubricants: friction increases as the roughness of the surface increases.
- Polishing surfaces: It makes the surfaces even and hence reduces friction.
- By using ball bearings: Rotating machines can be mounted on ball bearings.
Which type of friction is the weakest?
Rolling friction is the weakest kind of friction. It is the force that resists the motion of an object rolling across a surface.
Why do we slip when we step on a piece of soap on a wet floor?
Ans. The layer of soap makes floor smooth due to which the friction is reduced and the foot cannot make a proper grip on the floor. Therefore it is difficult to walk on a soapy floor and we start to slip on the floor. Q.
Why do we slip when we walk on water?
Friction plays an important role while walking on any surface. On the wet surface the friction is very low than the normal walking surface as layer of water makes the floor smooth. The coating of water reduces the friction and the foot cannot make a proper grip on the floor and it starts getting to slip on the floor.
What objects are slippery?
Slippery Surfaces and the Hazards They Pose
- Water, snow, or ice on outside surfaces or entranceways;
- Oil, grease, or some other type of lubricant;
- A foreign object, such as the proverbial banana peel or other food debris;
- Spilled liquid; or.
- Floor polish or wax.