Question

Cuket bald
(b) A body of mass 1 kg is kept at rest A constant force of 6 N starts acting
Find the time taken by the body to move through a distance of 12 m.
{a) Write any two differences between mass and weight
(b) An object is dropped from a tower. 180 m high. How long does it take to
the ground? (Take g = 10 m/s-).
o
LU​

Answer 1

Answer:

time = 2 sec b. 6 sec

Explanation:

given

u=0

m=1kg

F=6 N

s= 12m

F=ma

6=1*a

6/1=a

a=6 m/s^2

s=ut+1/2*a*t^2

12=0*t+ 1/2*6*t^2

12= 0+3t^2

12/3=t^2

√4=t

t=2 sec

b.

u=0

s=-180

a=-10

s=ut+1/2*a*t^2

-180= 0*t +1/2*(-10)*t^2

-180=-5t^2

180/5= t^2

√36=t

t= 6sec