Find magnitude of v and then double itFind unit vector of u Multiply the above two
Let's do it step by step:
Magnitude of v and then double itmagnitude||v||=√2^2+1^2+0^2=√5 double it become =2√5
Find unit vector of u magnitude||u||=√0^2+4^2+2^2=2√5
so unit.vector={0,2/√5,1/√5}
Multiply the above two:
when u multiply u get ( 0, 4/5, 2/5)
Answer:
20 m/s
Explanation:
First, you have to convert kilometers (72) to meters (72.000) then do the same with hours (1 hour) and seconds (3.600) Divide this numbers and you will get a result.
Answer:
the highest point above the ground = 0.48 m
Explanation:
lets ignore air friction, spring details,
The rest mass hanges 0.42 m above the floor and you pull 0.06 m below the original position, this is done by putting energy into the stratched spring so that when released the mass will compress the spring and cover a distance 0.06 m above the rest height.
then the highest point the mass will attain is 0.42 m + 0.06 m = 0.48 m above the ground.
That two ways are known as:
1) Series connection
2) Parallel connection
