Answer:
The increase in gravitational potential energy is the same in both cases
Explanation:
It is easier to climb a mountain in a zigzag way rather than climbing on a straight line but since the distance is the same ( vertical height ) , mass and gravity is the same. Hence the increase in gravitational potential energy is the same in both cases.
gravitational potential energy = mgh ( same in both cases )
m = mass
g = acceleration due to gravity
h = distance ( vertical height )
Speed =dist./time
=73.4/5
=14.68 km/hr
We know, d = m/v
d = 968 g/cm3
m = 250 gm
Substitute their values,
968 = 250 / v
v = 250 / 968
v = 0.26 cm3
In short, Your Answer would be Option B
Hope this helps!
Answer:
0.44c
Explanation:
We know that
Time interval at speed (ts)= time interval at rest(tr) / gamma
where
gamma = √[1-(v/c)²]
ts = tr / gamma
tr/ts = gamma
But
Ss/Sr = gamma
Where
Sr = clock speed at rest, Ss at speed):
So
√[1-(v/c)²] = 2/5
1 - (v/c)² = 4/25
(v/c)²= 5/25
v/c = √5 / 5
v = 0.444c
Answer:
it traveled 1350 kilometers or 839 miles
Explanation:
You just have to do 450 times three because its 3 HOURS and 450 kilometers per HOUR.
