1) A car going at 50km/h slows to a stop when a constant force of 3000N...
1) A car going at 50km/h slows to a stop when a constant force of 3000N is applied by the brakes. How far does the car travel until it stops?
2) A spring is hanging from the ceiling, When a 100g mass is placed on the spring, the spring stretches by 2cm. What is the spring constant? How far does it stretch with a 150g mass attached to it?
Homework Answers
In question 1 to calculate distance we must
know mass of car. However, I have solved question by assuming mass
of car equal to m.
Add Answer to:
1) A car going at 50km/h slows to a stop when a constant force
of 3000N...
Problem 3. A car is traveling at a speed of 20 m/s when the driver applies...
Problem 3. A car is traveling at a speed of 20 m/s when the driver applies the brakes. The car stops in 5 seconds. How far (in meters) does the car travel in that time? Assume the car's deceleration is constant.
Two cars start from rest at a red stop light. When the light turns green, both...
Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward. The blue car accelerates uniformly at a rate of 5.6 m/s2 for 3 seconds. It then continues at a constant speed for 7.8 seconds, before applying the brakes such that the car’s speed decreases uniformly coming to rest 178.16 meters from where it started. The yellow car accelerates uniformly for the entire distance, finally catching the blue car just as the...
2. An experiment is performed to measure the spring force constant (k) of an unknown spring....
2. An experiment is performed to measure the spring force constant (k) of an unknown spring. When a 100g +/- 1g mass (m) is hung from the spring stretches a length (x) 5cm+/-0.2cm. Based on these measurements, what is the uncertainty in the k? Suppose the experiment had been done with a 300g +/-1g mass. How would this affect (if at all) the uncertainty in k due to the stretch? How would this affect (if at all) the uncertainty in...
A car starting from rest moves in a straight line with a constant acceleration of 1.60...
A car starting from rest moves in a straight line with a constant acceleration of 1.60 m/s² for 11.0 s, then slows down to a stop with a constant deceleration of 2.75 m/s². How far does it travel?
A car starting from rest moves in a straight line with a constant acceleration of 1.70...
A car starting from rest moves in a straight line with a constant acceleration of 1.70 m/s² for 13.0 s, then slows down to a stop with a constant deceleration of 2.70 m/s². How far does it travel?
A car is traveling with a constant speed when the driver suddenly applies the brakes, giving...
A car is traveling with a constant speed when the driver suddenly applies the brakes, giving the car a deceleration of 3.50m/s2. The car comes to a stop in a distance of 34.0 m. What was an initial speed of the car? How long (the time) did it take for this car to stop? What was the car's speed when it had traveled 17.0 m from the point where the brakes were applied? How long did it take for this...
5. A car starting from rest moves in a straight line with a constant acceleration of...
5. A car starting from rest moves in a straight line with a constant acceleration of 2.15 m/s² for 12.0 s, then slows down to a stop with a constant deceleration of 3.10 m/s². How far does it travel?
2. (13 points) A drag race car le traveling it 95 m/s when it crosses the...
2. (13 points) A drag race car le traveling it 95 m/s when it crosses the finish line. The driver applies the brakes, which provide a constant acceleration with magnitude 15 m/s (a) (6 points) How long does it take for the car to come to a stop? 9= 15m/s² v=95m/s 95 mis - 15 /s2 6.3 m/s (b) (7 pointa) How far does the cur travel from the finish line to the point where it stops? 9= 15 mis?...
A car of mass 2.0 x 103 kg is initially moving at 75 km/h when the...
A car of mass 2.0 x 103 kg is initially moving at 75 km/h when the brakes are applied and the car is brought to a stop in 25 m. Assuming the force that stops the car is constant, find the magnitude of that force that stop the car. A. - 15.73x103 N B. -17.3x103 N C. 16.73x103 N D. 12.73x103 N
a) Determine the stiffness constant of a vertical spring if it stretches by 1.4 cm when...
a) Determine the stiffness constant of a vertical spring if it stretches by 1.4 cm when an object of mass 3.2 kg is hung from the free end of the spring. (b) For the same spring in Part (a), how far will the spring stretch if the 3.2 kg object is replaced by an object of mass 2.5 kg? (c) For the same spring in Part (a), determine how much mass is hung on the free end of the spring...
Problem 3. A car is traveling at a speed of 20 m/s when the driver applies the brakes. The car stops in 5 seconds. How far (in meters) does the car travel in that time? Assume the car's deceleration is constant.
2. An experiment is performed to measure the spring force constant (k) of an unknown spring. When a 100g +/- 1g mass (m) is hung from the spring stretches a length (x) 5cm+/-0.2cm. Based on these measurements, what is the uncertainty in the k? Suppose the experiment had been done with a 300g +/-1g mass. How would this affect (if at all) the uncertainty in k due to the stretch? How would this affect (if at all) the uncertainty in...
2. (13 points) A drag race car le traveling it 95 m/s when it crosses the finish line. The driver applies the brakes, which provide a constant acceleration with magnitude 15 m/s (a) (6 points) How long does it take for the car to come to a stop? 9= 15m/s² v=95m/s 95 mis - 15 /s2 6.3 m/s (b) (7 pointa) How far does the cur travel from the finish line to the point where it stops? 9= 15 mis?...
Most questions answered within 3 hours.
-
The x component of the velocity of an object vibrating
along the x-axis obeys the equation...
asked 10 minutes ago -
A junction box contains two trade size 2 raceways on the left
side, and two trade...
asked 43 minutes ago -
Atmospheric Mass
Venus and Earth have about the same mass and radius, but the
atmospheric pressure...
asked 1 hour ago -
5. Discuss the use of fault tree analysis (FTA) for risk
assessment (maximum one paragraph).
asked 2 hours ago -
Given that a sample of aluminium oxide has a Young's modulus of
393 GPa and a...
asked 4 hours ago -
At a certain temperature, the equilibrium constant, Kc, for this
reaction is 53.3.
H2(g)+I2(g)−⇀↽−2HI(g)Kc=53.3
At this...
asked 5 hours ago -
Question1 ) The STL provides similiar classes called stack and
queue, both of which gave functions...
asked 6 hours ago -
For Questions 1-4, assume you have 5 bits available:
1. For (positive) integers: What is the...
asked 6 hours ago -
convert grams into vloume with the density of water being at
.997514 g/cm^3 at 23.1 Celsuis...
asked 8 hours ago -
Foreman company obtained a $20,000, 6% loan on May 1, 2018.
Principal and interest will be...
asked 8 hours ago -
5. Problem 11.05 (Discounted Payback)
eBook
Project L costs $60,000, its expected cash inflows are $14,000
per...
asked 8 hours ago -
1. Which of the following is true about politics and health
organizations?
A. Health organizations are...
asked 9 hours ago