Car A and B start a race from rest. Car A starts with an acceleration of...
Car A and B start a race from rest. Car A starts with an acceleration of 100 m/s^2 and after 10s increases with acceleration to 200 m/s^2. Car B starts with an acceleration of 50 m/s^2 and after 5s increases the acceleration to 300 m/s^2.
1) What is the distance between cars after 1s
2) What is the velocity of each car after 1s
3) After 30 seconds which car is ahead?
Homework Answers
The initial velocity of the cars are zero, the following equations of motion were used,
(1) Distance travelled by the car A in 1 second is,
Distance travelled by the car B in 1 second is,
(2) Velocity of the car A in 1 second is,
Velocity of the car B in 1 second is,
(3) Since acceleration is different after the first 10 seconds, we have to calculate distances in two parts.
Distance travelled and velocity of car A in 10 seconds is,
Hence distance travelled by the car A in next 20 seconds is,
Hence the total distance travelled is 65000 m.
Distance travelled and velocity of car B in 10 seconds is,
Hence distance travelled by the car B in next 20 seconds is,
Hence the total distance travelled is 72500 m.
Therefore car B is ahead.
Add Answer to:
Car A and B start a race from rest. Car A starts with an
acceleration of...
The acceleration of a race car for the first few seconds of the race can be...
The acceleration of a race car for the first few seconds of the race can be approximated by the a(t) = A + Bt linear formula, where t is the time measured in seconds and the values of the constants A and B are: A = 16.0 m/s2 and B = -2.00 m/s3. What is the speed of the car 2.30 s after it starts from rest? How much distance does the car cover during this 2.30 s time period?
12) A sprinter running a 100 m race starts at rest and accelerates at constant acceleration...
12) A sprinter running a 100 m race starts at rest and accelerates at constant acceleration A for 3.0 seconds and then maintains a constant velocity. In terms of A, what is the position of the runner after 3.0 seconds? What is A if the sprinter finishes the race in 12.0 seconds? 13) What force is needed to accelerate a 30.0 lb block at 2.2 m/s2? 14) What force is needed to stop a 1500 kg car in 40 m...
Part 2 (Choose 3 Nom TUTT I 1. A race car starts from rest and travels...
Part 2 (Choose 3 Nom TUTT I 1. A race car starts from rest and travels 400 meters in 5.2 seconds. When it crosses the finish line it has a final velocity of 140 m/s. a) What is the acceleration (a) of this car? b) How much time was spent traveling from 100 m/s to 140 m/s? c) If this car continued at this rate of acceleration, how long would it take for it to travel 800 meters? 2. A...
A test car starts from rest on a horizontal circular track of 80 m radius and...
A test car starts from rest on a horizontal circular track of 80 m radius and increase its speed at a uniform rate to reach 100 Km/h in 10 seconds. Determine the magnitude of total acceleration of the car 8 seconds after the start . Rotation of the radially slotted arm is governed by 0-0.21 + 0.02r, where 0 is in radians and t is in seconds. Simultaneously, the power screw in the arm engages the slider B and controls...
In a quarter-mile drag race, two cars start simultaneously from rest, and each accelerates at a...
In a quarter-mile drag race, two cars start simultaneously from rest, and each accelerates at a constant rate until it either reaches its maximum speed or crosses the finish line. Car A has an acceleration of 11.6 m/s2 and a maximum speed of 108 m/s. Car B has an acceleration of 11.7 m/s2 and a maximum speed of 91.0 m/s. Which car wins the race, and by how many seconds?
Chapter 2, Practice Problem 2018 A car starts from rest with an acceleration of 4.4 m/s...
Chapter 2, Practice Problem 2018 A car starts from rest with an acceleration of 4.4 m/s which decreases hearty with time to zero in 90 seconds, after which the car continues at a constant speed. Determine the time towed for the travel 100 m from the start. Answert the tolerance is +/-29 Click If you would like to show Work for this questioni Open Show Work
2) The acceleration for a car is 3.6 m/sec2. It starts from rest. 2- The velocity...
2) The acceleration for a car is 3.6 m/sec2. It starts from rest. 2- The velocity after 1 second is? . 2 1 ( Secon The velocity after 10 second is? The distance traveled in 1 second is? The distance traveled in 10 second is?
A race car starts from rest and travels east along a straight and level track. For...
A race car starts from rest and travels east along a straight and level track. For the first 5.0 s of the car's motion, the eastward component of the car's velocity is given by What is the acceleration of the car when vx 16.5 m/s? Express your answer with the appropriate units. ()(0.930 /s)t2 aValue Units
A car starts from rest and moves along a straight line with an acceleration of a...
A car starts from rest and moves along a straight line with an acceleration of a =10x(-1/5) m/s where x is in meters. Determine the cars position and velocity when = 4.481 s. X(4.481) V(4.481) =
The tangential acceleration of a car that starts from rest at A is (90 + s)/...
The tangential acceleration of a car that starts from rest at A is (90 + s)/ 450 m/s^2, where s is the distance in meters measured along the curse from A. Compute the acceleration vector of the car when it is at B.
12) A sprinter running a 100 m race starts at rest and accelerates at constant acceleration A for 3.0 seconds and then maintains a constant velocity. In terms of A, what is the position of the runner after 3.0 seconds? What is A if the sprinter finishes the race in 12.0 seconds? 13) What force is needed to accelerate a 30.0 lb block at 2.2 m/s2? 14) What force is needed to stop a 1500 kg car in 40 m...
Part 2 (Choose 3 Nom TUTT I 1. A race car starts from rest and travels 400 meters in 5.2 seconds. When it crosses the finish line it has a final velocity of 140 m/s. a) What is the acceleration (a) of this car? b) How much time was spent traveling from 100 m/s to 140 m/s? c) If this car continued at this rate of acceleration, how long would it take for it to travel 800 meters? 2. A...
A test car starts from rest on a horizontal circular track of 80 m radius and increase its speed at a uniform rate to reach 100 Km/h in 10 seconds. Determine the magnitude of total acceleration of the car 8 seconds after the start . Rotation of the radially slotted arm is governed by 0-0.21 + 0.02r, where 0 is in radians and t is in seconds. Simultaneously, the power screw in the arm engages the slider B and controls...
Chapter 2, Practice Problem 2018 A car starts from rest with an acceleration of 4.4 m/s which decreases hearty with time to zero in 90 seconds, after which the car continues at a constant speed. Determine the time towed for the travel 100 m from the start. Answert the tolerance is +/-29 Click If you would like to show Work for this questioni Open Show Work
2) The acceleration for a car is 3.6 m/sec2. It starts from rest. 2- The velocity after 1 second is? . 2 1 ( Secon The velocity after 10 second is? The distance traveled in 1 second is? The distance traveled in 10 second is?
A race car starts from rest and travels east along a straight and level track. For the first 5.0 s of the car's motion, the eastward component of the car's velocity is given by What is the acceleration of the car when vx 16.5 m/s? Express your answer with the appropriate units. ()(0.930 /s)t2 aValue Units
A car starts from rest and moves along a straight line with an acceleration of a =10x(-1/5) m/s where x is in meters. Determine the cars position and velocity when = 4.481 s. X(4.481) V(4.481) =
The tangential acceleration of a car that starts from rest at A is (90 + s)/ 450 m/s^2, where s is the distance in meters measured along the curse from A. Compute the acceleration vector of the car when it is at B.
Most questions answered within 3 hours.
-
Let C = (2.25 m, 15 ∘ above the negative x-axis) and D = (30.6
m,...
asked 36 seconds from now -
of the following statements below is/are an example of a
normative statement?
I. The water shortage...
asked 47 seconds ago -
Carbon disulfide is prepared by heating sulfur and charcoal. The
chemical equation is
S2(g)+C(s)−⇀↽−CS2(g) Kc=9.40 at...
asked 4 minutes ago -
complete the problem and solution paragraph below, include 2-3
causes and 2-3 solutions for them.
remember...
asked 7 minutes ago -
I was looking for help with a computer science c programming
class. not c++
This program...
asked 31 minutes ago -
Albinism is an autosomal recessive condition characterized by
absence of melanin pigment from the skin, eye...
asked 21 minutes ago -
Suppose you're looking at a physics example online, and come
across this expression in the middle...
asked 29 minutes ago -
Compile a list (7 or more) of other commands useful for
navigating or manipulating the UNIX/Linux...
asked 38 minutes ago -
How many grams of PbBr2 will precipitate when excess CrBr3
solution is added to 61.0 mL...
asked 40 minutes ago -
If I was given the address of 134.15.0.0/16 from my ISP and I
wanted to use...
asked 45 minutes ago -
What is the pH of the solution that results of dissolving 1.74g
of sodium hydroxide in...
asked 49 minutes ago -
Given a standardized normal distribution (with μ = 0 and a σ =
1), what is...
asked 1 hour ago