Question

Q35- If the velocity increase from 30m/s
to 70m/s in 20 seconds then it's
acceleration is *
O Imeter per second square
O-Imeter per second square
O meter per second square
O-2 meter per second square​

Answer 1

Answer:

acceleration = change in velocity / time

a = (v - u) / t

(70-30)/20

40/20

= 2 meter per second square

all the options are incorrect

Answer 2

Answer :

Initial velocity = 30m/s

Final velocity = 70m/s

Time interval = 20s

We have to find acceleration of the particle$.$

⧪ Acceleration is defined as the rate of change of velocity.

It is a vector quantity having both magnitude as well as direction.

It can be positive, negative or zero.

SI unit : m/s²

Mathematically, a = (v - u)/t

• a denotes acceleration
• v denotes final velocity
• u denotes initial velocity
• t denotes time

➙ a = (v - u)/t

➙ a = (70 - 30)/20

➙ a = 40/20

➙ a = 2m/s²

Cheers!