1) If a $5\ kg$ ball is accelerating at $1.5\ m/s^2$, what is the force acting on it?
2) A person on a scooter is accelerating at $2\ m/s^2$. If the person has a mass of $50\ kg$ how much force is acting on that person?


1). Mass of the ball $m=5\ kg$

Acceleration $a=1.5\ m/s^2$

Force $F=ma$      [Newton's Law of motion]

Or $F=5\ kg\times1.5\ m/s^2$

Or $F=7.5\ N$

Therefore, applied force is $7.5\  N$.

2). Mass $m=50\ kg$

Acceleration $a=2\ m/s^2$

Force $F=ma$  

Or $F=50\  kg\times2\ m/s^2$

Or $F=100\ N$

Therefore, applied force is $100\ N$.

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Updated on: 10-Oct-2022

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