Question

7. In a mass of 9.8 kg a force of 1 kg-wt produces an acceleration of:
a) 1 m/s2
b) 1/9.8 m/s
c) 9.8 m/s2
d) 1 cm/s2​

Answer 1

Answer:

Mass is 9.8 kg. According to Newtown's second law of motion, acceleration =force/mass. Therefore, a=9.8 N/9.8kg=1 ms^-2.

Answer 2

Newton's Second Law :

It states that , Force applied on a body is equals to mass times the acceleration .

$\bigstar\ \; \sf \huge{\green{F=ma}}$

Question :

In a mass of 9.8 kg , a force of 1 kg-wt produces an acceleration of :  

a 1 m/s²

b) 1/9.8 m/s²

c) 9.8 m/s²

d) 1 cm/s²

Solution :

Mass , m = 9.8 kg

Force , F = 1 kg-wt = 9.8 N

Acceleration , a = ? m/s²

$\bigstar\ \; \sf F=ma$

$:\implies \sf 9.8=(9.8)a$

$:\implies \sf \dfrac{9.8}{9.8}=a$

$:\implies \sf \pink{a=1\ m/s^2}\ \; \bigstar$

Option A