Question

a car increases its speed from 15km/h to 30km/hr in 12 seconds its acceleration is a.30m/s². b.0.3m/s² c.50m/s² d.18m/s²​

Answer 1

Answer:

Here given ------

v= 30km/h

u= 15km/h

t = 12 sec. = 12 /3600 = 1/300

a = ?

We know that ------

v = u + at

30 = 15 + 1/300a

1/300a = 30 - 15

1/300a = 15

a = 15 / 1/300

a = 300 /15

a = 20 km/h

a = 1000 / 20

a = 50m/s^2

Answer 2

Answer:

A according to me option c is correct answer of this.