Reference no: EM13700390
Solve the all parts of following problem given below:
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 3.5 m/s2 for 4.2 seconds. It then continues at a constant speed for 6.4 seconds, before applying the brakes such that the car's speed decreases uniformly coming to rest 155.51 meters from where it started. The yellow car accelerates uniformly for the entire distance, finally catching the blue car just as the blue car comes to a stop.
Part A: How fast is the blue car going 2.9 seconds after it starts?
Part B: How fast is the blue car going 6.9 seconds after it starts?
Part C: How far does the blue car travel before its brakes are applied to slow down?
Part D: What is the acceleration of the blue car once the brakes are applied?
Part E: What is the total time the blue car is moving?
Part F: What is the acceleration of the yellow car?
Please help for the above question, completely confused!! Show each steps if possible, Thanks.
Find the charge on the inner surface of the conductor
: The electric field at point P just outside the outer surface of a hollow spherical conductor of inner radius 10 cm and outer radius 29 cm has magnitude 457 N/C and is directed outward. What is the charge on the inner surface of the conductor
|
What is the velocity of the ball relative to the driver
: A person riding in the back of a pickup truck traveling at 70km/h on a straight, level road throws a ball with a speed of 20km/h relative to the truck in the direction of the truck's motion. What is the velocity of the ball relative to the driver
|
Find the speed of the electrons when they hit the screen
: In a cathode ray tube in an old TV, electrons are accelerated from rest with a constant acceleration of magnitude 7.62 x 1013 m/s2 during the first 1.93 cm of the tube's length; Find the speed of the electrons when they hit the screen
|
How much energy is required to increase their separation
: An electron and a proton are a distance r = 7.7 x 10-9 m apart. How much energy is required to increase their separation by a factor of four
|
Find the total time the blue car is moving
: Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward. What is the total time the blue car is moving
|
Find the magnitude of this cars acceleration while braking
: According to recent typical test data, a Ford Focus travels 0.280mi in 19.9s , starting from rest. Find the magnitude of this car's acceleration while braking
|
What is an unbiased estimator
: Unbiased Estimators: What is an unbiased estimator? Is the sample variance an unbiased estimator of the population variance? Is the sample standard deviation an unbiased estimator of the population standard deviation?
|
What is the change in the electric potential energy
: Two particles with Q1 = 46 µC and Q2 = 82 µC are initially separated by a distance of 2.2 m and then brought closer together so that the final separation is 1.3 m. What is the change in the electric potential energy
|
Measure the amount of dust in the mine atmosphere
: 5. A laboratory weights filters from a coal mine to measure the amount of dust in the mine atmosphere. Repeated measurements of the weight of dust on the same filter has a standard deviation of σ = 0.08 milligram (mg) and mean 123 mg.
|