People who drive cars with automatic transmissions often do not pay as much attention as they should. In contrast; People who are used to shifting gears will focus more on their driving making it more efficient and safe. Cars with automatic transmissions have improved through modern chips that have developed better shifting and response with the driver just pressing on the gas. However, they are not as much fun because they are not as challenging. Cars with stick shifts have more power, and tend to respond better when you accelerate.
Spoilers on the front of the vehicle are usually called air dams, since in addition to directing air flow they also reduce the amount of air flowing underneath the vehicle which reduces lift and drag. 3) What rev. limit is set for both cars during testing? 4) What is the purpose of the rear spoiler or wing? How does changing the angle help?
! Newton’s First Law! Newton’s first law is about how an object that is at rest or moving at a constant speed will continue in that fashion unless an uneven force is applied to it. If a vehicle is traveling but then were to suddenly stop would cause a devastating amount of force on the mass of the object in a small amount of time causing certain death. The seatbelt attempts to increase the time that it takes for the mass to come to a stop and hopefully saving it.!
2. “A body at rest will remain at rest unless acted upon by an outside force.” Example- A car accelerates from a stop sign or a stopped car is propelled forward by a rear –end collision. Conservation of Energy The law of conservation of energy states, “Energy can neither be created nor destroyed. It can only be changed from one form to another.” Example- If a car slows down gradually; the brakes develop friction and heat. During an auto crash, the transfer of energy happens at a much greater rate into different forms.
How does average speed relate to the distance covered and the time taken for travel? * The average speed is way different than the distance, but a little similar to time. For example: the time was 2.53 and the speed was 2.42 2. Should the recorded average speed represent the maximum speed for each event? * It depends, if the object was traveling at a constant speed, then yes.
The amount of liquid to load into a tank depends on _______-The legal weight limits and the amount the liquid will expand in transit. 9.) You are driving on a clear night. You must dim your headlights from high to low. You should adjust your speed so you can stop within ______-The distance you can see ahead.
Stick Shift or Automatic? Why are stick shift cars so popular? They are more difficult to drive, and you must be skilled to drive them. Why not choose an automatic easier ride, which turns your driving in to comfort, especially while driving in heavy traffic? If this is what you think, you need to read this before you decide.
Centripetal Force is the radial force which acts ON a rotating mass and Centrifugal Force is the radial force which is exerted BY a rotating mass. (1b) Centripetal Acceleration is the inwards acceleration necessary to maintain circular motion. If a point moves at uniform speed in a circular path, its direction is continually changing and, therefore, though its speed is constant its velocity is changing. Acceleration is defined as “rate of change of velocity with respect to time” Centripetal Acceleration (a) = v² (Linear Velocity) r Centripetal Acceleration (a) = w²r (Angular Velocity) (2)a Mass 1000kg (m) Radius of Curve 45m (r) Coefficient Friction 0.7 (u) Track of Vehicle 1.5m (d) Centre of Gravity 0.68m (h) Acceleration (force of gravity) 9.81 m/s² (g) Without skidding outwards, Centrifugal force = Frictional resistance to skidding = m v² = u m g r Max Speed v = √u g r =√ 0.7 x 9.81 x 45 =√ 309.015 = 17.5788 m/s Convert to km/h = (17.5788m/s x 3.6) = 63.3 km/h Without overturning, Overturning moment = Righting moment = m v²h = m g d r 2 Max Speed V = √g r d 2 h =√ 9.81 x 45 x 1.5 2 x 0.68 =√ 225.1395 = 15.0046 m/s Convert to km/h = (15.0046m/s x 3.6) = 54 km/h (2)b Rotating Bobs 250g (each) Spring Strength 8 kN/m Centre Mass of Bob 160mm radius (resting) Balance of forces = F + R = Mw²r At Engagement, F = Stiffness x Extension = 8 x 1000 x
Results: | | Tension (N) | a (experimental) | a (theoretical) | 0.05 | 0.05 | 0.49 | 0 | 0 | 0.05 | 0.1 | 0.65 | 3.24 | 3.27 | 0.1 | 0.15 | 1.18 | 2.07 | 1.96 | 0.1 | 0.2 | 1.31 | 3.43 | 3.27 | Analysis/Discussion: The results show that the greater the ratio of mass, the acceleration will be also greater. The hypothesis was found to be true. When both masses are the same, the acceleration (both theoretical and experimental) are indeed zero. As the ratio of the masses increased, so did the acceleration. The tension got bigger as the
Because the ball is constantly moving it is constantly changing direction and therefore it’s constantly changing velocity. This means even if the speed is constant the velocity is always changing. When the object has enough momentum, it is launched into the air an optimum angle to go high enough to travel far in the time it’s in the air, but not so that it just travels straight upward and not horizontally. It doesn’t matter what athletic event it is, as the analysis of the circular motion is the same. Newton’s three laws describe the relationship between force, mass and acceleration.