Answer:
Factor by which kinetic energy increase = 4 times
Step-by-step explanation:
Given,
- Mass of the car, v1 = 1500 kg
- initial speed of car = 35 miles/h
= 15.64 m/s
Initial kinetic energy of the car is given by,
= 183606.46 J
- Final velocity of car v2 = 70 miles/hour
= 31.29 m/s
So, final kinetic energy of car is given by
= 734425.84 J
Now, the ratio of final to initial kinetic energy can be given by,
Hence, the kinetic energy will increase by 4 times.
Answer: 1/4
Step-by-step explanation: i just took the quiz
Answer:
Andrew takes for a shower = 720 sec
1 min =60sec
720sec=12min
Andrew takes additional min for breakfast =420 sec
420 sec = 7min
time andrew take for both = 12+7
=19 min
Step-by-step explanation:
Answer:
it will take her 90000 seconds to complete 3000 piece of puzzle
Step-by-step explanation:
every 30 seconds, a correct puzzle piece , meaning 1 piece
how long would it take her to complete a 3000 piece puzzle
so let x = how long it would take her to complete a 3000 piece puzzle
so if 30 seconds = 1 piece
x seconds = 3000 piece
x = 90000 seconds
Answer:
u cant solve it
Step-by-step explanation:
because if u distribute the -3 to x you get -3x, then add 3x and u have 0x to the problem is false cause u cancelled out x