Answer:
2 m/s
Explanation:
Given that a student walks 4 blocks east, 1 blocks north, 2 block west and then 1 blocks south in an hour.
The total time = 1 hour
The vertical displacement = 1 - 1
Vertical displacement = 0
Horizontal displacement = 4 - 2
Horizontal displacement = 2
Total displacement = sqrt (2^2 - 0^2)
Total Displacement = 2
Average velocity = displacement/time
average velocity = 2 / 1
Average velocity = 2 m/s
Therefore, her average velocity is 2 metres per second.
The answer is D) none of the above
If you shine a light straight down onto that vector, then the length of its shadow on the x-axis is
x-component = 88 · cosine(13°)
x-component = 88 · (0.9744)
<em>x-component = 85.74</em>
Kinetic energy is the energy possessed by an object having some mass and moving at some speed due to its motion. Kinetic energy is given as
KE = (0.5) m v²
where KE = kinetic energy
m = mass of the object in motion
v = speed of the object in motion.
it is a scalar quantity and has only magnitude and no direction.
