Ms. Howard's science class looked at the group of stars called the Big Dipper, They watched it in the early evening during fall
and spring. This is what
they saw:
Fall- upright and low in the sky
Spring - upside down and high in sky
Why does the position of the Big Dipper change during the year?
O A Earth revolves around the Sun,
OB. The position of the Moon is different in the fall than in the spring.
O C. The Big Dipper is made of different stars in the fall than in the spring.
OD. The Big Dipper moves toward Earth in the fall and away in the spring.
they saw:
Fall- upright and low in the sky
Spring - upside down and high in sky
Why does the position of the Big Dipper change during the year?
O A Earth revolves around the Sun,
OB. The position of the Moon is different in the fall than in the spring.
O C. The Big Dipper is made of different stars in the fall than in the spring.
OD. The Big Dipper moves toward Earth in the fall and away in the spring.
1 answer:
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Answer:
Explanation:
When an object strikes the ground, the potential energy of the rock gets converted to the kinetic energy.
A rock is dropped from a distance above the surface of the earth and is observed to have kinetic energy
when it hits the ground.
For another rock, It is dropped from twice the height above the earth’s surface and has kinetic energy
when it hits.
For the first rock, ..............(1)
For the second rock, ..............(2)
Dividing equation (2) by (1) we get :
Hence, this is the required solution.
Answer: a) 5965.2N b) 379.2N c) 29.37m/s
Explanation: shown in the attachment
