### Physics Problem: Deceleration of a Car#### Question:A car has an initial speed of 30 m/s and starts to decelerate at a rate of 2.5 m/s². How long will it take for the car to stop?#### Options:- 4.8 s- 24 s- 75 s- 12 sThis question is designed to test your understanding of the concepts of speed, deceleration, and time. ### Explanation:To solve this problem, you can use the equation of motion for deceleration:\[ v_f = v_i + at \]Where:- \( v_f \) is the final velocity (0 m/s, since the car comes to a stop)- \( v_i \) is the initial velocity (30 m/s)- \( a \) is the acceleration (here it will be negative because it's deceleration, -2.5 m/s²)- \( t \) is the time in secondsWe need to solve for \( t \):\[ 0 = 30 + (-2.5)t \]Rearranging and solving for \( t \):\[ 2.5t = 30 \]\[ t = \frac{30}{2.5} \]\[ t = 12 \, \text{seconds} \]Thus, the car will take 12 seconds to come to a complete stop. The correct option is:- 12 s

Given:- Initial velocity (u) = 30 m/s Final velocity (v) = 0 m/s (Car stops) acceleration…

Answered: A car has an initial speed of 30 m/s…

A car has an initial speed of 30 m/s and starts to decelerate at a rate of 2.5 m/s2. How long will it take for the car to stop? 4.8 s O 24 s O 75 s O 12 s

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

1. The wheel starts rotating from rest, 2) if its angular velocity Was a function of angular position 0 is W=0.1-0², where O is in radian, and its radius ris 0.2 m, what is the magnitude of the angular acceleration (in rad/s?) of the wheel after the wheel has turned 1.1 revolution(s) from rest. Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point. P
Remaining Time: 46 minutes, 11 seconds. * Question Completion Status: A Moving to another question will save this response. Question 4 A bob mass in a conical pendulum attached by a cord makes an angle 0= 10° with the vertical and moves with a constant speed. Find the centripetal acceleration (in m/s-) of the bob mass. O 5.77 O 2.68 O 4.66 O 1.76 O 3.64 A Moving to another question will save this response.
Question 3 The work done for a thermodynamic process can be calculated using the tabulated data and the equation below: Table 1: Pressure vs Volume Data Pressure (kPa) where W is work done, P is pressure, and V is the volume. Use Trapezoidal method (Do it by hand and show all calculations) and built-in trapz function to estimate the total Work done, in kJ. Volume (m³) W = 0.5 2 S 3 PdV 336 294.4 266.4 260.8 260.5 249.6 193.6 165.6 4 6 8 10 11
Question 29 Not yet an A pulley, starting from rest, is given an acceleration of 0.5 rad/s.What will be its speed in r.p.m. at the end of 2 minutes? If it is uniformly retarded at the rate of 0.3 rad /s, in how many minutes the pulley will come to rest? B Enter your answer here.... hp
As we explained in earlier chapters, the air resistance to the motion of a vehicle is something important that engineers investigate. The drag force acting on a car is determined experimentally by placing the car in a wind tunnel. The air speed inside the tunnel is changed, and the drag force acting on the car is measured. For a given car, the experimental data generally is represented by a single coefficient that is called drag coefficient. It is defined by the following relationship: F, where air resistance for a car that has a listed C, = drag coefficient (unitless) measured drag force (N) drag coefficient of 0.4 and width of 190 cm and height of 145 cm. Vary the air speed in the range of 15 m/s
The Simple Pendulum A H M Sketch a graph to show the predicted relationship. 2² H Task 8 In your group, discuss how to derive an equation to relate the initial pendulum height H to the bob's v 2 at its lowest point. Show the derivation of the equation. Then, again, use your theoretical equation to calculate the expected (theoretical) slope. Use g = 9.79 ± 0.05 m/s2 expected change in the bob's kinetic energy and the expected change in the bob's potential energy during this motion? released from rest and moving from a high position to its lowest position
The left side of this equation tells how much energy Q the cylinder gives to the water while it cools. The right side of this equation tells how much energy Q the water and aluminum cup absorb from the cylinder to warm up. Because it is the same energy, they are equal. What is known in this equation? Mcyl 411.7 g, malum 46.5 g, malum+water = 175 g Can you find: mwater =? g Twater = Talum = 20°C (water and cup of room temperature) 90°C, T; = 35°C (hot cylinder and cool "cylinder+cup+water" temperatures) Tcyl kCal Calum = 0.22, Cwater 1 (specific heat of water and aluminum, measured in units kg-°C What are we looking for is Ccul - How we find it? Plug all the numbers into the equation (1), Ccul will be one unknown which you can calculate from the equation. Important, convert all the masses from grams to kilograms! After you find Ccyl, compare it to known value for the copper 0.093(our cylinder is made out of copper). |Ceyl -0.093| % : · 100% 0.093
Hello. Answer is s=5.76m (how far the car travels when the driver slams brake on an inclined surface). I am uploading this question as the example answer's working out was so horrific I cannot follow through. I would like to see working out how the calculations equate to the answer being s=5.76m. Many thanks
Posted below is a picture of a data table and a diagram of an experiment. In the experiment you rolled a marble down a ruler ramp off the end of a coffee table to observe projectiles and conservation of energy. You do 3 trials for each initial height. Each height is measured in meters. h= initial height of marble off of table Y= height of table off floor X= horizontal distance marble goes from edge of table to where it strikes the floor a) use the table to find information you need to solve for theoretical range and % of error in measured range.
) Prof. K. took a Tesla Model S for a test drive. The car weighs 4,500 lb and can accelerate from | O to 60 mph in 2.27 seconds. The car has a 581 kW battery pack. Help Prof. K. determine the efficiency of the vehicle [Ans. to Check 55.5%). Note: The equation we learned in class P= F v ONLY APPLIES if velocity is constant. Use the steps below to guide your thought process. Develop a symbolic relationship for the force required to move the car forward. Compute the work done by the car (in Ib-ft). Calculate the power required to do this work (in kW). Ey el mp cul 2) After playing a game of pinball, you decide to do some calculations on the launching 9:09 AM P Type here to search 33°F Mostly sunny 3/7/2022 PrtScn Tnd Home
3. For this series of 5 questions, a block is released from the position shown with a certain initial velocity. It then slides down the smooth (friction-less) path for which the function is given in the image. You will be asked to solve for different things. Please pay attention: the numbers may change from problem to problem since they are randomized. 2) As the block slides down, its potential energy converts into kinetic energy. If its initial velocity is 1.5 m/s (at x = 3 m), determine its velocity, v, at x = 3.0 m. Your answer must include 2 places after the decimal point and the proper unit. Take g = 9.81 m/s². k = 5 kN/m ponder Your Answer: Answer units y = 0.25x². 3 m V X
A Moving to another question will save this response. Quèstion 9 The figure below shows a skier sliding down a frictionless circular slope. What is the speed of the skier at B if his speed at A is 14 m/s? 40° 30 m F9 F10 F8 F6 F7 Esc F3 F4 F5 F1 F2 & 23 6. 7 V 8N 4 5