Answer: B
Explanation:
<em>Velocity</em> is the speed of an object <u>but in a particular direction. </u>
<u></u>
If you look, answer choices A, C, and D, all give certain speeds, but they don't give any direction, like north east west or south. Only B gives the speed in a particular direction (north).
Hope this helps :))
Answer:
999.23 km/h
Explanation:
We can use the formula for average speed as "Distance divided time" to solve the problem.
Let's start by writing the time in hours: 4 h and 20 min is the same as 4 hours + 1/3 of an hour = 13/3 of an hour
Now we use this number in the quotient for average speed:
Average speed = 4330 km / (13/3) h = 12990 / 30 km/h = 999.23 km/h
Answer:
1800J
Explanation:
Given parameters:
Weight of the book = 20N
Total distance covered = 45m + 15m + 30m = 90m
Unknown:
Total work performed on the books = ?
Solution:
To solve this problem we must understand that work done is the force applied to move a body through a certain distance.
So;
Work done = Force x distance
Work done = 20 x 90 = 1800J
Answer: Beth
Explanation: Dewayne (a) = 12/4 = 3m/s^2.
Beth (a) = 16/5 = 3.2 m/s^2.
So, Beth is the answer.
