Aphysics book slides off a horizontal table top with a speed of 1.90 m/s. it strikes the floor after a time of 0.490 s. ignore air resistance. a. find the height of the table top above the floor.
b. find the horizontal distance from the edge of the table to the point where the book strikes the floor.
c. find the magnitude of the horizontal component of the book's velocity just before the book reaches the floor.
d. find the magnitude of the vertical component of the book's velocity just before the book reaches the floor.
e. find the magnitude of the book's velocity just before the book reaches the floor.
f. find the direction of the book's velocity just before the book reaches the floor.

A.

B.

C.

D.

E.

F.

Explanation:

From the exercise we know the initial x-component of the book's velocity and how long does it take to strike the floor

A. To calculate the height of the table top above the floor we need to use the equation of position from free falling objects

When the book strikes the floor y=0 and its initial velocity in the y component is 0 because is the book is sliding from an horizontal table

B. To calculate the magnitude of the horizontal component we need to analyze the x component

C. To find the magnitude of the horizontal component of the book's velocity we need to solve the following equation:

D. To find the magnitude of the vertical component of the book's velocity we need to solve the following equation:

E. To calculate the resultant of the two components we need to add the two vectors:

F. To find the direction of the book's velocity we need to calculate the arctan

the answer would be c

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2