The answer of this question is called uplift i.e the rising of rock layers in geology is called uplift.
Uplift is the process in which there will be vertical elevation of earth surface due to various natural processes occurring inside the surface of earth like earth quakes. Sometimes uplift is also caused by the mountain building which hampers the balance of a particular region.
In the process of uplift,the rocks normally metamorphic rocks present underground will be brought up to the earth surface.The enhanced elevation will cause erosion of lot of materials on the surface of earth.
I would say A not 100℅ thou
Answer:
1.8 m/s
Explanation:
here's the solution : -
momentum = mass × velocity
=》18 × 0.1
=》1.8 m/s
Answer:
Explanation:
18 km / h
= 300 m / min
12 km / h = 200 m / min
distance travelled in 200 minutes = 300 x 200 = 60000 m
distance travelled in 50 minute in return journey = 200 x 50 = 10000 m
total distance travelled = 70000 m
total time = 250 minute
speed = 70000 / 250
= 280 m / min
= 16.8 km / h
Total displacement = 60000 - 10000 = 50000 m
total time = 250 min
velocity = 50000 / 250
= 200 m / min
= 12 km / h
The mechanical enegia is the sum of the kinetic energy plus the potential energy
Kinetic energy = (1/2) * m * v ^ 2
Potential energy = m * g * h
Mechanical energy = (1/2) * m * v ^ 2 + m * g * h
What is the mechanical energy of the sled at the top?
Mechanical energy = (1/2) * m * v ^ 2 + m * g * h
Mechanical energy = (1/2) * (50) * (0) ^ 2 + (50) * (9.8) * (7.5) = 3675
Mechanical energy = 3675J
What is the mechanical energy of the sled at the bottom?
By conservation of energy we have that the energy in point 1 is equal to the energy in point 2
Mechanical energy = 3675J
What is the speed of the sled at the bottom of the hill?
Mechanical energy = 3675J = (1/2) * m * v ^ 2
clearing up v we have
(1/2) * (50) * v ^ 2 = 3675
v ^ 2 = 3675 * (2) * (1/50)
v = root (3675 * (2) * (1/50)) = 12.12 m / s
answer
3675J
3675J
12.12 m / s
