Question

Suppose a car can go from 0 to 100 km/h in only 2.0 seconds. This car’s acceleration is about_________.

Answer 1

`14m/s^2`

Step-by-step explanation:

Initial speed of car=0 Km/h=
`0m/s`

Final speed of car=
`100km/h=100* (5)/(18)=(250)/(9) m/s`

By using
`1km/h=(5)/(18)m/s`

Time taken by car=2 s

We know that

Acceleration=
`a=(v-u)/(t)`

Where v=Final velocity of object

u=Initial velocity of object

t=Time taken by object

Using the formula

Acceleration of car=
`((250)/(9)-0)/(2)=(250)/(9* 2)=13.9 m/s^2\approx 14m/s^2`

Hence, the acceleration of car about=
`14m/s^2`