he velocity vector is found by taking the displacement divided by the amount of time.
The total displacement is 15 km West.
So the velocity is 15 km W / 45 min.
To convert to km/hr, multiply by 60 min/ 1 hour so the minutes will cancel in the numerator and denominator
15 * 60 / 45 km W / hr = 20 km/h West.
Also sometimes the term "velocity" is used when "speed" is intended in which case you can forget about what direction the movement was in and just say the speed was 20 km/hour.
Also if you want to keep the direction and use vectors, you might have a coordinate system with the x axis going in the East direction, the y axis in the North direction, and assume the world is flat :-) Then if the unit vector for x is "i" and the unit vector for y is "j" then you're looking at a velocity vector that is -20 i (in km/hour).
Answer:
Explanation:
Please ask if you have more questions!
Speed = distance / time = 55 / 0.75 = 73.3 miles per hour.
force × distance = work done
4200N × 1609m = 6,757,800Nm
Answer:(1)=current (2)=force (3)=magnetic field (4)=reverse
Explanation:When there's a current in The coil. A force act on each side Of The coil. This is because the coil is in a magnetic field, the direction Of The spin would reverse
