Question

An egg falls off a table. The floor is 0.8 m from the table top.

a) Calculate the time taken to reach the ground.

b) Calculate the velocity of impact with the ground.​

Answer 1

Given : An egg falls off a table. The floor is 0.8 m from the table top.

To Find :

a) Calculate the time taken to reach the ground.

b) Calculate the velocity of impact with the ground.​

Solution:

egg falls

=> initial velocity  u = 0

a = g = 10 m/s²

floor is 0.8 m from the table top

=> s = height = 10 m

Using formula

S = ut + (1/2)at²

=> 0.8 = 0 + (1/2)(10) t²

=> t² = 0.16

=> t = 0.4 sec

time taken to reach the ground is 0.4 secs

V = u + at

=> V = 0 + 10 * 0.4

=> V = 4 m/s

velocity of impact with the ground.​ is 4 m/s

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Answer 2

$\huge\underline{\overline{\mid{\bold{\color{maroon}{\mathcal{Question:-}}\mid}}}}$

✠An egg falls off a table. The floor is 0.8 m from the table top.

a) Calculate the time taken to reach the ground.

b) Calculate the velocity of impact with the ground.

$\huge\underline{\overline{\mid{\bold{\color{red}{\mathcal{Answer:-}}\mid}}}}$

egg falls

⟹initial velocity u = 0

a =g = 10 m/s2

floor is 0.8 m from the table top

⟹s = height = 10 m

Using formula

S = ut + (1/2)²

⟹0.8 = 0 + (1/2)(10) t²

⟹t² = 0.16

⟹t = 0.4 sec

time taken to reach the ground is 0.4 secs

V = u + at

⟹V = 0 + 10 × 0.4

⟹V = 4 m/s

velocity of impact with the ground. is 4 m/s