Question

.a car increases its speed from 10 m/s to 20/s in 2.5. seconds calculate it’s acceleration

Answer 1

`\boxed {\boxed {\sf 4\ m/s^2}}`

Step-by-step explanation:

Acceleration is the rate of change of an object with respect to time. It is the change in velocity over the time.

`a= (v_f-v_i)/(t)`

The car starts at 10 meters per second and increases to 20 meters per second in 2.5 seconds.

• 
  `v_f`= 20 m/s
• 
  `v_i`= 10 m/s
• t= 2.5 s

Substitute the values into the formula.

`a= ( 20 \ m/s - 10 \ m/s)/(2.5 \ s )`

Solve the numerator.

`a= (10 \ m/s)/(2.5 \ s)`

Divide.

`a= 4 \ m/s/s`

`a= 4\ m/s^2`

The acceleration of the car is 4 meters per second squared.