Holden is trying to determine the velocity of his race car. he went 20 meters east, turned around, and went 40 meters west. he turned the car one more time and went 35 meters east. his car was 15 meters from the starting line. this took 5 seconds. what is the car’s velocity? 3 m/s west 3 m/s east 19 m/s west 19 m/s east

3 m/s east

Explanation:

You can see the velocity as the distance travelled by a body per unit time in a given direction.

First, the car went 20 meters east, when it travelled 40 meters west, its position was 20 meters west, last, when he travelled 35 meters east, the final position was 15 meters east.

As total time was 5 seconds. The speed is:

15 m east/ 5s = 3 m/s east

I hope it helps!

th answer is b

Explanation:

beta decay is the answer

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.