if object net force doubles while mass object halved, then acceleration of object is ...?

Question

(a) 1/4 as great
(b) 1/2 as great
(c) 2 times greater
(d) 4 times greater
(e) unchanged

Answer 1

a. try using the equation

f = ma
2f=m/2 a
4f=ma
4f/m = a
f/m = a/4

therefore a is 1/4 as great.

Answer 2

Everybody knows that f=ma
In another way a=f/m ---------(1)

i.e acceleration is directly propotional to force and inversely propotional to mass.

force is doubled i.e f becomes 2f and
mass is halved i.e m becomes m/2
so from (1) you get a=4f/m
a=4 times the earlier value

Answer 3

Acceleration equals force divided by mass. If mass is halved, then its effect on acceleration is to double it. Now include the effect of doubling the force.

Answer 4

If F=ma,
then a = F/m

plug in your numbers....
2F / 1/2m = 4F/m

If F/m = a then,

4F/m = 4a

Answer is 4 times greater.

Answer 5

ans=d
its acc become 4 times of initial one
f=m*a-(1)
2f=m/2*a`-(2)
div. 1by2
gives a`=4a