Planetary Nebulae hope that helps
<span>Correct Answer: Option B
The complete question is:
A train starts from rest and accelerates uniformly until it has traveled 3.7 km and acquired a velocity of 30m/s The train then moves at a constant velocity of 30m/s for 410 s. The train then slows down uniformly at 0.065m/s</span>²<span> until it reaches a halt. What distance does the train travel while it is slowing down?
We have the initial velocity u = 30 m/s
Final velocity = v = 0
Acceleration = a = -0.065 m/s</span>²
The negative sign indicates that the train is slowing down.
Using the 3rd equation of motion, we can find the distance covered by the train:
2as = v² - u²
2(-0.065)S = 0 -30²
⇒
S = 6923 meters = 6.9 km
Answer:
<em>Timing Belts </em>are components of internal combustion engines sinchronizing the handles and cranks rotation with the camshaft when operating its valves.
Internal combustion systems such as the ones found in cars for example, need a method to get the heat away from the system; the mechanical device set for that purpose is the <em>water pump</em>, which pushes coolant over the radiator, the hoses and engine block; that <em>water pump </em>is generally joint with the crankshaft pulley through those <em>timing belts</em>. Thereyby (A.)
Explanation:
<span>
The rate of bullets per minute = 6000 per minute
= 6000/6 per sec
=10 bullets per sec
as we know
F=n * m * v
=10 . 200 . 25 .10^-3
= 2N</span>
Actually Welcome to the Concept of the Work And Energy.
So we here use the formula as,
W= Mgh
so after solving we get as,
W = 0.686 Joules