Question

Exercise 15 (B)
1. Copy each net into your book and add the face that is needed to make the pet of the named
solid. Shade the added face.
(iv)
cube
rectangular prism
square prism
triangular prism​

Answer 1

Answer:

Given :-

Initial velocity = 0 m/s

Acceleration due to gravity = 10 m/s

Time = 10 sec

To Find :-

Speed when hit ground and height of the table

Solution :-

Firstly we will use Newton first law for finding speed

v = u + at

v = 0 + 10 × 10

v = 0 + 100

Hence, speed of Ball is 100 m/s.

Let's find height

Here, we will use Newton third law

v² - u² = 2as

100² - 0² = 2 × 10 × s

10,000 - 0 = 20s

10,000 = 20s

s = 10,000/20

s = 500 m

Hence the height of table is 500 m

\begin{gathered} \\ \end{gathered}

Answer 2

Mark me brainelist then I will follow you