Question

3. The velocity of car changes from 10 m/s to 40 m/s in 3 sec. What is the
acceleration of the car?
a) 10m/s?
b) 20m/s2
c) 30m/s?
d) 40m/s2​

Answer 1

Answer:

acceleration =v-u/t

Explanation:

40-10/3

30/3

10 m/s²

Answer 2

Answer:

a)10 m/s

Explanation:

initial velocity of car=10 (u)

final velocity of car=40 (v)

time taken=3 sec (t)

v = u + a × t

40 = 10 + a × 3

40 - 10 = a × 3

30 = a × 3

30 / 3 = a

10 = a

acceleration = 10 m/s