Question

What is the average force needed to change the velocity of 20,000 kg

bus from rest to 15 m/s in 10 seconds?
O 5,000 N
O 10,000 N
O 20,000 N
O 30,000 N

Answer 1

d)30,000 N

Step-by-step explanation:

Solution:

mass(m)=1000kg

initial velocity (u)=0m/s

final velocity (v)=15m/s

So,

acceleration (a)=(v-u)/t

=(15-0)/10

=1.5m/s^2

Atlast,

Force(F)=m×a

=20000×1.5

=30,000 N