a ball is projected vertically downwards at 3ms-1 from a height of 3.6m at what velocity would it hit the ground
Answers
Answer:
How did Congress react to the Black Codes of the 1860s?
Congress passed new laws that restricted the rights of African Americans.
Congress asked President Johnson to take control of Reconstruction.
Congress took control of Reconstruction from President Johnson.
Congress supported President Lincoln’s plan for states’ re-admittance.
Explanation:
How did Congress react to the Black Codes of the 1860s?
Congress passed new laws that restricted the rights of African Americans.
Congress asked President Johnson to take control of Reconstruction.
Congress took control of Reconstruction from President Johnson.
Congress supported President Lincoln’s plan for states’ re-admittance.
Explanation:
Question : Prove that√5 is irrational.
Answer :
Let us assume that √5 is a rational number.
Sp it t can be expressed in the form p/q where p,q are co-prime integers and q≠0
⇒√5=p/q
On squaring both the sides we get,
⇒5=p²/q²
⇒5q²=p² —————–(i)
p²/5= q²
So 5 divides p
p is a multiple of 5
⇒p=5m
⇒p²=25m² ————-(ii)
From equations (i) and (ii), we get,
5q²=25m²
⇒q²=5m²
⇒q² is a multiple of 5
⇒q is a multiple of 5
Hence, p,q have a common factor 5. This contradicts our assumption that they are co-primes. Therefore, p/q is not a rational number
√5 is an irrational number
Hence proved