Question

A body moves along a straight line with an acceleration 3 metre per second square for 2 seconds and then with an acceleration of 4 metre per second square for 3 seconds what is the average acceleration

Answer 1

Hey dear,

◆ Answer-
a = 3.6 m/s^2

◆ Explaination-
# Given-
a1 = 3 m/s^2
t1 = 2 s
a2 = 4 m/s^2
t2 = 3 s

# Solution-
Total time = 2 + 3 = 5 s

Let a be average acceleration.
Then we have the eqn,
at = a1t1 + a2t2
a × 5 = 3×2 + 4×3
5a = 6 + 12 = 18
a = 18/5
a = 3.6 m/s^2

Therefore, average acceleration of the is 3.6 m/s^2.

Hope this helps...