Two locomotives approach each other on parallel tracks. Each has a speed of 95 km per h with respect to the ground. If they are
1 answer:
Answer:
t = 0.045 hr
Explanation:
given,
speed of the car A = 95 Km/h
speed of car B = 95 Km/h
initial distance = 8.5 Km
time = ?
now,
the relative speed between the two vehicle
= 95 - (-95) = 190 Km/h
we have use negative speed because one car is moving opposite to other.
we know,
distance = speed x time
t = 0.045 hr
time taken the car to reach each other is equal to 0.045 hours.
You might be interested in
Answer:
planet that is farthest away is planet X
kepler's third law
Explanation:
For this exercise we can use Kepler's third law which is an application of Newton's second law to the case of the orbits of the planets
T² = ( a³ = K_s a³
Let's apply this equation to our case
a =
for this particular exercise it is not necessary to reduce the period to seconds
Plant W
10² = K_s
a_w =
a_w = 4.64
Planet X
a_x =
a_x = \frac{1}{ \sqrt[3]{K_s} } 74.3
Planet Y
a_y =
a_y = \frac{1}{ \sqrt[3]{K_s} } 18.6
Planet z
a_z =
a_z = \frac{1}{ \sqrt[3]{K_s} } 41.8
From the previous results we see that planet that is farthest away is planet X
where we have used kepler's third law
Answer:
Speed,
Explanation:
Given that,
Distance covered by the electron, d = 32 cm = 0.32 m
Time, t = 2 ns
We need to find the speed of an electron. Speed is equal to distance covered divided by time. So,
So, the speed of the electron is .