QUESTION 1 A book is dropped from the top of a building and takes 2.4s to hit th

Q: QUESTION 1 A book is dropped from the top of a building and takes 2.4s to hit th

Solution: 1) Using h = u*t + 0.5 * g * t^2 => h = 0.5 * 9.8 * 2.4^2 (as u=0) => h = 28.224 m 2) h = 0.5 * 9.8 * 5.6^2 => h = 153.664 m 3) Using h = 0.5 * g * t^2 => 112 = 0.5 * 9.8 * t^2 => t = 4.781 s 4) 92 = 0.5 * 9.8 * t^2 => t = 4.33 s

ID: 1864824 • Letter: Q

Question

QUESTION 1 A book is dropped from the top of a building and takes 2.4s to hit the ground. How tall is the building (Hint: How far did the book fall?) QUESTION 2 A rock dropped down a well takes 5.6s to hit the water. How far below the top of the well is the surface of the water? QUESTION 3 A worker drops a sandwich from the top of a 112 meter tall building. How long does it take for the sandwich to hit the ground? QUESTION 4 A worker drops a wrench from the top of a 92 meter tall building. How long does it take for the wrench to hit the ground?

Explanation / Answer

Solution:

1) Using h = u*t + 0.5 * g * t^2

=> h = 0.5 * 9.8 * 2.4^2 (as u=0)

=> h = 28.224 m

2) h = 0.5 * 9.8 * 5.6^2

=> h = 153.664 m

3) Using h = 0.5 * g * t^2

=> 112 = 0.5 * 9.8 * t^2

=> t = 4.781 s

4) 92 = 0.5 * 9.8 * t^2

=> t = 4.33 s

Navigate

QUESTION 1 A bit stream 01001011 is encoded using the standard CRC method. The g

QUESTION 1 A boy throws a football. After the ball leaves his hand, which of the

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.

QUESTION 1 A book is dropped from the top of a building and takes 2.4s to hit th

Question

Explanation / Answer

Related Questions

Navigate