So you see, Newton's 3rd law can explain your balloon powered car. air shoots out the back at high speed and the car moves forwards (more or less) at low speed. So the force used to accelerate all that air backwards has an opposite force on the balloon (reaction) which is tied to the car so pushes in the opposite direction. Well the air's coming out fast in the beginning but thats when the car is only just moving, it takes a while to speed up and it takes even longer if you have a heavy car. So you may be able to argue it shows that f is proportional to Mass x acceleration (but to be honest I think that would be stronging it a bit - balloons don't seem to give very constant thrust.
The faster the acceleration is, the less mass it is. Also physics concepts relates to mousetrap cars because in physics we learned that, in order for the mousetrap cars to move, it must have force acting upon it (ground) which pushes the car up. So both the force of the ground and the force of the mousetrap car must be equal in order for the vehicle to work go forward. Physics concepts relate to mousetrap cars because Newton’s laws are involved in these mousetrap cars. Newton’s first law states that, “everybody continues in its state of rest or uniform motion in a straight line unless it is compelled to change that state by forces impressed on it.” The mousetrap car relates to this because the mousetrap car does not move until the force of the mousetrap moves it.
Reducing pressure has opposite effect, gasses expand and so reaction is less vigorous. http://staff.um.edu.mt/jgri1/teaching/che2372/notes/10/10_16.gif (Collision photo) http://www.roadcover.co.za/wp-content/uploads/2011/09/car-crash-wallpapers_5294_1024x768.jpg (another collision photo) Hypothesis For a hypothesis a plastic cart was placed on a ramp which lead down to tracks. Then a meter ruler was placed next to the track , and a block was placed on the track. Then marked where the block remained using a marker, then released the cart to hit the block causing a collision. Then a cylinder was placed after writing down the results(On a numerical table) of how far the block was pushed from the marked spot.
This helps to stop accidents because it removes distractions from a p-plate driver so they can focus solely on driving. Another danger P-plate drivers face while on the roads is their driving speed. If a driver is going too fast, they are not able to stop fast enough or pay enough attention while driving, which can cause accidents. The current p-plate laws are effective in reducing accidents through a drivers speed by introducing laws which limit p-plate drivers to the speed of 90km/h, as well as not allowing p-plate drivers to drive turbo or supercharged engines or have modifications in their engines. These p-plate laws are affective in reducing accidents on the road, because they reduce p-plate drivers to a low speed as well as slow cars.
Place your answers in the blanks below. Batman’s velocity: ________________ The Joker’s velocity: __________________ d) Make a rough sketch of (a) position vs time graphs (b) velocity vs time graphs (c) acceleration vs time graph of Batman and Joker. 20) An object has a speed of Vi it accelerates at a for t seconds and ends with a speed of Vf . If it accelerated for 3t seconds find the final velocity in terms of Vi and Vf. 21) One rock is dropped from the top of a cliff of height h at the same time as a second rock is tossed upward at speed v. if the rock that was tossed upward takes twice as much time to reach the ground as the one that was dropped, what was the initial speed, v, of the rock that was thrown (state in terms of g and h)?
The majority of accidents are caused by driver error and what if that could be diminished if the cars that we drive, drive themselves? With the modern technologies emerging, car industries begin to develop driverless cars. Comparing to a standard vehicle, driverless cars now have the technology to help drivers stay in their lane, avoid collisions. They have become highly advanced over the years. The point of a driverless car is safety, but there are plenty of people who guess that self-driving cars are dangerous.
How much work is needed to accelerate the car from 50 km/hr to 150 km/hr? 1) 2 W0 2) 3 W0 3) 6 W0 4) 8 W0 5) 9 W0 4 Two blocks of mass m1 and m2 (m1 > m2) slide on a frictionless floor and have the same kinetic energy when they hit a long rough stretch (m > 0), which slows them down to a stop. Which one goes farther? 1) m1 2) m2 3) they will go the same distance 2 A golfer making a putt gives the ball an initial velocity of v0, but he has badly misjudged the putt, and the ball only travels one-quarter of the distance to the hole. If the resistance force due to the grass is constant, what speed should he have given the ball (from its original position) in order to make it into the hole?
An object in motion will not stop, slow down, or change its direction unless an outside force acts on it (such as gravity, friction, and air resistance). When you are riding in a bumper car and end up in a collision with another bumper car, you feel a jolt. This is because your body's inertia wants it to keep traveling in the direction it was moving with the car even though your bumper car has now suddenly stopped. Newton's Second Law: The greater the mass of an object, the harder it is to change its speed. (More force is needed to move it.)
iii. It doesn’t matter if you have a perfect driving record or have never been in a car accident. iv. According to the National Safety Council, you may be involved in one of the estimated 1,600,000 accidents per year caused by someone who was texting and driving. The National Organizations for Youth Safety calls this problem “an epidemic that threatens everyone on or near a road.” C. Accidents caused by people who text and drive are occurring more frequently, and it is our responsibility to speak up against it before we or someone we love is hurt or killed because of it.
Practical: Measuring Average Speed Aim: to determine the average speed of 2 door cars and 4 door cars along Anzac Parade between 11:30a.m – 12:00a.m on the 5th February 2008 Hypothesis: My hypothesis is that 2 door cars will have a higher average speed because they are usually lighter and faster. Also many 2 door cars are sport cars driven by younger drivers who enjoy traveling at higher speeds. Equipment: • Yellow Markers indicating 100m • Stopwatches • Tape measure Procedure: • Measure out 100m length on the footpath next to Anzac Parade • Position one person at the start • Position three people at the end, with stopwatches • First person drops arm as car passes, indicating the start of stopwatches • The three people with stopwatches measure the time taken and calculate an average of the three taken times • Record results • Repeat for 6 cars of both 2 door and 4 door • Tabulate results Diagram: Results: Car Number 1 2 3 4 5 6 Total Average 4 door cars Average time (seconds) tav 5.67 6.87 5.87 5.92 6.00 6.29 6.10 Average Speed (m/s) Sav 17.64 14.56 17.04 16.89 16.67 15.90 16.45 2 door cars Average time (seconds) tav 6.29 6.45 6.35 6.62 5.92 6.24 6.31 Average Speed (m/s) Sav 15.90 15.50 15.75 15.11 16.89 16.03 15.86 Conclusion: In conclusion, the experiment was a success as we competently determined the average speeds of 2 door and 4 door cars, which was the aim. From the table of results, we can see that the average velocity of 4 door cars was higher as they on average, traveled at higher speeds than 2 door cars. This proved my hypothesis was incorrect as the 2 door cars did not have a higher average speed than the 4 door cars.