It goes to rest
or it goes to motion
Radio-waves
Explanation:
When a police officer uses radar for speed control, the officer is using an electromagnetic radiation known as radio-waves.
- Electromagnetic waves are waves that are produced by the vibration of both magnetic and electrical fields.
- Radar is made up of radio waves.
- Radio waves are classified as non-ionizing electromagnetic radiations.
- The characteristically have long wavelength and low frequency.
- They are often used for long range communication.
- In airports, radio towers uses a radar system to communicate with aircraft.
Learn more:
Electromagnetic waves brainly.com/question/6818046
#learnwithBrainly
Answer:
12.6 (3 sig. fig.)
Explanation:
(12^2 + 4^2)^1/2 = 12.6 (3 sig. fig.)
The initial horizontal velocity of the rock, in m/s is 21.241 m/s.
<h3>What is projectile?</h3>
When an object is thrown at an angle from the horizontal direction, the object is said to be in projectile motion. The object which follows the projectile motion.
Time taken by the stone to reach the ground is
t = √2h/g
t = √(2x 86)/9.81
t = 4.19s
The horizontal velocity is
V(x) = Horizontal distance traveled / Time taken t
Put the values, we get
V(x) = 89 m/4.19 s
V(x) = 21.241 m/s
Thus, the horizontal velocity is 21.241 m/s
Learn more about projectile.
brainly.com/question/11422992
#SPJ1
Answer:
YES THERE ARE VERY MANY BOOKS THAT YOU CAN BUY OR BORROW FROM YOUR LOCAL LIBRARY, HOPE THIS HELPS! HAVE A GREAT DAY!
Explanation: