Question

One unit of force is the amount that produces an acceleration of ____ in an object of mass_____
(a) 1m/s2 , 1g (b) 1m/s2 , 1kg (c) 1ms2 , 1kg (d) none of these

Answer 1

Answer:

Using the formula

Force=mass×acceleration

Force=(1kg)×(1m/s

2

)

Force=1kg−m/s

2

=1N

Hence, 1N is the force which produces an acceleration of 1 ms

−2

in object of mass 1 kg.

Answer 2

Answer:

b) 1000 g

Explanation:

Given: F=1N, a=1ms−2

F=ma

⇒1N=m×1ms−2

⇒m=1kg

Therefore, 1 N of external force is said to be applied when a mass of 1 kg=1000 g accelerates by 1 m/s2.