Question

A 50kg boy and his 20kg bicycle are accelerating at 3m/s2. What is the total force that is being applied?

O 150 Newtons
O 60 Newtons
O 70 Newtons
О 210 Newtons

Answer 1

F = 210 N

Step-by-step explanation:

Given that,

Mass of a boy is 50 kg

Mass of a bicycle is 20 kg

Total mass is 70 kg

Acceleration of the total mass is 3 m/s².

We need to find total force that is being applied. Net force is given by :

F = ma

F = 70 kg × 3 m/s²

F = 210 N

So, the net force is 210 N. Hence, the correct option is (d).