Balance:
a book resting on a table
a car driving at 10 miles per hour in constant velocity
a cat sitting on a chair
a bulb that attach to the ceiling
your grandma sleeping on a bed
Unbalance:
your brother sprinting across the kitchen
a ball rolling at 5 m/s^2
your mom trying to run at 2 m/s^2 to spank you
you dropping your coffee mug on a floor
a cat jumping out of your bed
a tear from your eye falling through the floor
Hope this helps
Answer: - 25.2 kgm/s
Explanation: The mass of the ball is 0.5kg, and the initial velocity = 10.6m/s.
The final velocity is in opposite direction of the initial hence final velocity (v) = - 19.9 m/s
Impulse = change in momentum = final momentum - initial momentum.
Final momentum = mass × final velocity
Final momentum = - 19.9 × 0.5
Final momentum = - 9.95 kgm/s
Initial momentum = mass × initial velocity
Initial momentum = 0.5 × 10.6 = 5.3kgm/s
Change in momentum = final momentum - initial momentum = - 19.9 - 5.3
Change in momentum = - 25.2 kgm/s
The negative sign implies that the change in momentum is the opposite direction relative to the first.
The human eye sees radio waves with a very short wavelength, which is another way of saying high-frequency waves. The word "ultra" should queue you in that ultraviolet waves are higher frequency than just violet waves. Violet is sorta purplish or blueish, which is the highest frequency or "color" that our eyes can see. So ultraviolet is higher frequency than visible light, which is the same thing as "color." On the other hand, red is the lowest frequency or highest wavelength that our eyes can see. And "Infra" means lower than red, so, infrared waves are "colors" or frequencies, smaller than visible light. To determine where microwaves fall under look up "Electromagnetic Spectrum." Good luck!
