Actually, the speed of the earth is the same everywhere, taking the angular speed as the valid measure of the speed
Answer:
20 ms¯¹
Explanation:
3. Determination of the final velocity
From the question given above, the following data were obtained:
Time (t) = 4 s
Acceleration (a) = 5 ms¯²
Initial velocity (u) = 0 ms¯¹
Final velocity (v) =?
Acceleration is simply defined as the change in velocity per unit time.
Mathematically, it can be expressed as:
Acceleration (a) = final velocity – Initial velocity / time
a = v – u / t
With the above formula, we can obtain the final velocity of the car as follow:
Time (t) = 4 s
Acceleration (a) = 5 ms¯²
Initial velocity (u) = 0 ms¯¹
Final velocity (v) =?
a = v – u / t
5 = v – 0 / 4
5 = v / 4
Cross multiply
v = 5 × 4
v = 20 ms¯¹
Thus, the final velocity of the car is 20 ms¯¹
Frost will disturb the smooth flow of air over the wing, unpleasantly
distressing its lifting competence. In other words, this spoils the even flow
of air over the wings, by this means decreasing lifting capability. Also, frost
may avoid the airplane from becoming flying at normal departure speed.
Answer:
New Resistance = 247.5 ohm
Explanation:
Resistance = resistivity * length / area
Since resistivity for the material is constant, resistance is directly proportional to (length/area).
This means that if (length/area) decreases or increases by any ratio, then resistance will increase or decrease by the same ratio.
So let's find the change in length/area
New length = 0.25 old length
New area = (1/9) old area (This is because area equation contains a square of the diameter. if diameter decreases by 1/3, area decreases by (1/3)^2 )
So we now get length /area:
New length / new area = ( 0.25 old length) / (1/9 of old area)
New length / new area = 9*0.25 (old length / old area)
New length / new area = 2.25 (old length / old area)
To get the new resistance, we simply multiply it by the ratio we just found.
This equals:
110 * 2.25 = 247.5 ohm
Answer:
Because the bike is slowing down at a faster rate than you are.
Explanation:
An object in motion will stay in motion. The bike is slowing down faster than the passenger. The bike will slow the rider down because the rider is hanging on but you will feel the force when the bike is breaking.
Newton's first law of motion - sometimes referred to as the law of inertia. An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
