Planet A is heavier than Planet B
Because Planet A is heavier than Planet B, Planet B will be easier to be moved by gravity causing it to move faster than Planet A.
Hope This Helped : )
Answer:
Impulse = Average force x time of contact
Explanation:
Impulsive force is a force which is very large but applied on a body for a very small duration of time.
Impulse is given by the change in momentum of the body.
Impulse = Average force x small time interval
When padding is there, the time interval of contact is large and thus, the force exerted by the body is small.
So, when a person falls on the tile floor, there is no compression and thus, the time of contact is very small and thus the impulsive force is very large, due to which the body may damage.
So, when a person falls on the carpeted floor, there is a compression and thus, the time of contact is comparatively large and thus the impulsive force is small, due to which the body may safe.
Explanation:
frequency =speed/wavelength
=5/0.5=10Hz
Answer:
-![29.2\times 10^{3} N](https://tex.z-dn.net/?f=29.2%5Ctimes%2010%5E%7B3%7D%20N)
Explanation:
We are given that
Mass of cars= m=1900 kg
Initial speed of car=u=20 m/s
Final speed of car=v=0
Time=
=1.3 s
We have to find the average force exerted on the car.
Average force=![\frac{change\;in\;momentum}{\Delta t}](https://tex.z-dn.net/?f=%5Cfrac%7Bchange%5C%3Bin%5C%3Bmomentum%7D%7B%5CDelta%20t%7D)
![F_{avg}=\frac{mv-mu}{1.3}](https://tex.z-dn.net/?f=F_%7Bavg%7D%3D%5Cfrac%7Bmv-mu%7D%7B1.3%7D)
![F_{avg}=\frac{1900(0)-1900(20)}{1.3}](https://tex.z-dn.net/?f=F_%7Bavg%7D%3D%5Cfrac%7B1900%280%29-1900%2820%29%7D%7B1.3%7D)
![F_{avg}=\frac{-38000}{1.3}=-29.2\times 10^{3} N](https://tex.z-dn.net/?f=F_%7Bavg%7D%3D%5Cfrac%7B-38000%7D%7B1.3%7D%3D-29.2%5Ctimes%2010%5E%7B3%7D%20N)
Hence, the average force exerted on the car that hits a line of water barrels=-![29.2\times 10^{3} N](https://tex.z-dn.net/?f=29.2%5Ctimes%2010%5E%7B3%7D%20N)
Answer:
Yes cause he walks 6.7 miles