To solve any problem in math or physics, you collect all the formulas,
laws, rules, and equations that you know about the subject, then, along
with the given information, use them to find the missing information.
So the answer to "how" really depends on what information you're given.
Answer:
https://physicsabout.com/acceleration-and-velcoity/
A) produces offspring with variations
Answer:
a) The speed of the ball is 2.47 m/s (in -x direction)
b) The speed of the block, both just after the collision is 1.236 m/s (in +x direction)
Explanation:
Please look at the solution in the attached Word file.
This one is complicated. Not hard, but several steps. The two 5-ohm resistors in series have a total resistance of 10 ohms. 1.6 A through 10 ohms means the battery is (1.6 x 10)=16 volts. Then ... 16 volts produces 2A of current through (16/2)=8 ohms of resistance. If 3 identical resistors in parallel look like like 8 ohms, then each one is (8 x 3)= 24 ohms. That's D.