Acceleration=changeofvelocitytimeinterval=ΔvΔt |
Part A Find the acceleration of a car that can go from rest to 70 km/h in 13 s . Express your answer using two significant figures. |
Acceleration=changeofvelocitytimeinterval=ΔvΔt Part A Find the acceleration of a car that can go from rest to 70...
Const Part A The tires of a car make 78 revolutions as the car reduces its speed uniformly from 90.0 km/h to 60.0 km/h. The tires have a diameter of 0.88 m. What was the angular acceleration of the tires? Express your answer using two significant figures. a = -1.8 rad/s? Subm Previous Answers Correct Part B If the car continues to decelerate at this rate, how much more time is required for it to stop? Express your answer to...
The tires of a car make 83 revolutions as the car reduces its speed uniformly from 90.0 km/h to 63.0 km/h. The tires have a diameter of 0.82 m. Part A What was the angular acceleration of the tires? Express your answer using two significant figures. α = rad/s2 Part B If the car continues to decelerate at this rate, how much more time is required for it to stop? Express your answer to two significant figures and include the...
A merry-go-round starts from rest and accelerates with angular acceleration 0.010 rad/s^2 for 22 s . Part A How many revolutions does it make during this time? Express your answer using two significant figures. delta theta=rev Part B What is its average angular speed? Express your answer using two significant figures. Wav=rad/s
I do not understand Part B. The crankshaft in a race car goes from rest to 3600 rpm in 2.1 s. What is the crankshaft's angular acceleration? Express your answer using two significant figures. Alfa= 180 rad/s^2 How many revolutions does it make while reaching 3600 rpm? Express your answer using two significant figures.
A merry-go-round starts from rest and accelerates with angular acceleration 0.020 rad/s2 for 18 s . How many revolutions does it make during this time? Express your answer using two significant figures. What is its average angular speed? Express your answer using two significant figures.
A 30%-efficient car engine accelerates the 1800 kg car from rest to 11 m/s. Part A How much energy is transferred to the engine by burning gasoline in km? Express your answer using two significant figures.
The tires of a car make 88 revolutions as the car reduces its speed uniformly from 90.0 km/h to 64.0 km/h. The tires have a diameter of 0.82 m. Part A What was the angular acceleration of the tires? Part B If the car continues to decelerate at this rate, how much more time is required for it to stop? Express your answer to two significant figures and include the appropriate units. Part C If the car continues to decelerate...
Part AA person who is properly restrained by an over-the-shoulder seat belt has a good chance of surviving a car collision if the deceleration does not exceed 30 "g's" (1.0g=9.8m/s2).Assuming uniform deceleration at 30 g's, calculate the distance over which the front end of the car must be designed to collapse if a crash brings the car to rest from 70 km/h .Express your answer to two significant figures and include the appropriate units. Part B Determine the stopping distances...
The tires of a car make 95 revolutions as the car reduces its speed uniformly from 95.0 km/hkm/h to 55.0 km/hkm/h. The tires have a diameter of 0.88 m Angular acceleration of the tires: -2 rad/s2 A. If the car continues to decelerate at this rate, how much more time is required for it to stop? Express your answer to two significant figures and include the appropriate units. B. If the car continues to decelerate at this rate, how far...
Part A When you sneeze, the air in your lungs accelerates from rest to 145 km/h in approximately 0.30 s. What is the acceleration of the air in m/6 Express your answer to two significant figures and include the appropriate units.