1. If a velocity that is 1 cm long represents a velocity of 10 km/h, what velocity does a vector 2 cm long drawn to the same scale represent?
2. When a rectangle is constructed in order to add velocities, what represents the resultant of the velocities?
a horizontal side of the rectangle
none of these
a vertical side of the rectangle
the diagonal
3. Calculate the resultant velocity of an airplane that normally flies at 210 km/h if it encounters a 40 km/h tailwind.
Calculate the resultant velocity if it encounters a 40 km/h headwind.
4. Calculate the resultant of the pair of velocities 80 km/h north and 55 km/h south.
Calculate the resultant if both velocities are directed south.
5. What is the maximum possible resultant of two vectors with magnitudes of 4 and 3 units? What is the minimum possible resultant?
maximum magnitude: ?
minimum magnitude: ?
2006-10-15 12:04:25 · 5 answers · asked by vintagex50s 2 in Science & Mathematics ➔ Physics
1. 2cm long vector would represent a velocity of 20kmph
2. The diagonal represents the resultant
3. Resultant velocity = (210 + 40)kmph = 250kmph
The velocities are added because they are in the same direction
4. Resultant velocity = ( 210 - 40)kmph = 170kmph
here they are subtracted
5. Maximum magnitude is 4 + 3 = 7units
Minimum Magnitude is 4 -3 = 1unit
2006-10-15 12:26:04 · answer #1 · answered by quark_sa 2 · 1⤊ 0⤋
1. If you see the algebraic equation 10km/h/1cm = x/2cm, solve for x
2. Why do they use a rectangle. Lay things out in a linear fashion and solve it.
3. Add up the velcocities
4. Add the vector velocities 80-55
Add the vector velocities 80+55
5 Add the vector velocities 4+3
Add the vector velocities -4+3
2006-10-15 14:10:45 · answer #2 · answered by Buzz s 6 · 0⤊ 0⤋
start up by utilising drawing the two vectors to scale with their tails on the beginning of an x,y coordinate gadget. carry between the vectors in a relentless direction, say the x direction, mutually as you start to rotate the different vector counterclockwise by using 360 stages. The sum is the dimensions of the diagonal of the parallelogram drawn from the beginning to the different corner with the two vectors as adjoining sides. interior the cases have been the ingredient interior the comparable direction you in simple terms upload the vectors scalar quantity. whilst they ingredient interior the different direction you subtract. whilst the direction is someplace in between you're able to desire to grasp the attitude to get the precise fee, yet i think of you will discover what the answer to the question is now.
2016-11-23 13:30:30 · answer #3 · answered by Anonymous · 0⤊ 0⤋
The sum of two vectors is the diagonal.
You place vectors end to end and the diagonal between them is the resultant velocity.
Really need to look at your vector diagrams its really very easy once you get the basic idea.
2006-10-15 12:14:32 · answer #4 · answered by Roadkill 6 · 0⤊ 0⤋
this looks like your homework thats due tomorrow.
2006-10-15 12:14:25 · answer #5 · answered by HoP-FroG 1 · 0⤊ 0⤋