Question

a car travelling at 20 km/ h it speed is up to 60 km / h in 6 second what is it acceleration ​

Answer 1

Answer:

• 400 km/h² is the required acceleration.

Explanation:

Given:-

• Initial velocity ,u = 20km/h
• Final Velocity ,v = 60km/h
• Time taken ,t = 6 m/s = 6/60 = 1/10 h

To Find:-

• Acceleration ,a

Solution:-

As we have to calculate the acceleration of the car.

Acceleration is defined as the rate of change of velocity at per unit time.

• a = v-u/t

where,

• v is the final velocity
• a is the acceleration
• u is the initial velocity
• t is the time taken

Substitute the value we get

→ a = 60-20/1/10

→ a = 40/1/10

→ a = 40×10/1

→ a = 400km/h²

• Hence, the acceleration of the car is 400 km/h².

Answer 2

Answer:

Given :-

• Initial velocity = 20 × 5/18 = 50/9 m/s
• Final velocity = 60 × 5/18 = 50/3 m/s
• Time = 6 second

To Find :-

Acceleration

Solution :-

As we know that

a = v - u/t

A is the Acceleration

V is the Final Velocity

U is the Initial Velocity

T is the Time

$\sf \: a \: = \dfrac{( \frac{50}{9} - \frac{50}{3}) }{6}$

$\sf \: a \: = \dfrac{ \dfrac{100}{9} }{6}$

$\sf \: a \: = \dfrac{50}{27}$

✯ Acceleration = 1.85 m/s².