Given: Acceleration a = 2 m/s²; Initial Velocity Vi = 0
Final Velocity Vf = 10 m/s
Required: Time t = ?
Formula: a = Vf - Vi/t
t = Vf - Vi/a
t = 10 m/s - 0 m/s/2 m/s²
t = 5 s
Answer:
Option C
Explanation:
In a large sized factory, it is essential to create cooling system based on duct work because it can then be able to regulate cooling of any section of the factory from one place. Also, ductwork cooling is preferred in large spaces such as big offices building, towers, factories etc.
Hence, option C is correct
Refraction is the change in direction of waves that occurs when waves travel from one medium to another. It is always accompanied by a wavelength and speed of change. Diffraction is the bending of waves around obstacles and openings.
Answer:
Both the rocks land together.
Explanation:
Given:
initial speed of Jan,
initial speed of Len,
direction of velocity by Jan with respect to vertical down direction,
direction of velocity by Len with respect to vertical down direction,
Now velocity of the rock by Len in the vertically downward direction:
Form the equation of motion:
where:
height covered by the object
initial velocity of the object
acceleration due to gravity
time taken by the object to fall the height
Since the velocity of both the rocks is same in the vertical direction are thrown form the same height therefore both of the rocks will land together.