I would say true. If you are calculating using vectors than it would need both...
PART A)
Impulse is defined as change in momentum
here finally after hitting the wall car comes to rest
So final momentum of the car will be ZERO
Initial momentum of the car is given as
here m = 2000 kg
v = 77 m/s
now we have
so here impulse will be
PART B)
As we know that force of impact is defined as
so here it is ratio of impulse and time
so if we increase the time of impact by 3 times
so the force will be decrease by factor of 1/3
so here force is decreased by 1/3
Answer:
The difference in atomic mass between the two isotopes is 1.002780942 atomic mass unit.
Explanation:
For an isotope-I (heavier)
Mass of an isotope-I=M
Number of neutrons = n+1
Number of protons = p
For an isotope-II
Mass of an isotope-II=M'
Number of neutrons = n
Number of protons = p
Difference in binding energy:
(general binding energy expression)
Binding energy difference between two isotopes:
..(1)
B.E-B.E'=5.4810 MeV
Answer:
The amount of time needed to stop the marble is much less than the amount of time needed to stop the basketball.
Explanation:
To explain this question we can use the equation:
Change in momentum = Force x Time
Where momentum = mass x Velocity
In the case of the basketball, it has a much larger mass than the marble, meaning it has much more momentum than the marble. This means that with the same amount of force, it will need much more time to stop.
Likewise, the marble has less mass than the basketball meaning it will have less momentum. This means that with the same amount of force, it will require less time to stop.
Logically this also makes sense if we think about it in a real life scenario. If we try to stop a marble with our finger, we can stop it much faster then if we try to stop a basketball with our finger because of the difference in mass between the two objects, therefore the marble will require much less time to be stopped than the basketball.
Hope this helped!