Question

a ball falls of table and reaches the ground in 2 seconds. assuming g = 10m/s² calculate its speed on reaching the ground​

Answer 1

Answer:

Given :-

• A ball falls of table and reaches the ground in 2 seconds.
• Assuming acceleration due to gravity (g = 10 m/s²).

To Find :-

• What is the velocity on reaching the ground.

Formula Used :-

$\clubsuit$ First Equation Of Motion Formula :

$\mapsto \sf\boxed{\bold{\pink{v =\: u + gt}}}$

where,

• v = Final Velocity
• u = Initial Velocity
• g = Acceleration due to gravity
• t = Time Taken

Solution :-

Given :

• Initial Velocity = 0 m/s
• Acceleration due to gravity = 10 m/s²
• Time Taken = 2 seconds

According to the question by using the formula we get,

$\longrightarrow \sf v =\: 0 + (10)(2)$

$\longrightarrow \sf v =\: 0 + 10 \times 2$

$\longrightarrow \sf v =\: 0 + 20$

$\longrightarrow \sf\bold{\red{v =\: 20\: m/s}}$

${\small{\bold{\underline{\therefore\: The\: velocity\: on\: reaching\: the\: ground\: is\: 20\: m/s\: .}}}}$