Question

a body of mass 1 kg moves with an initial velocity of 15 m/ a. if its velocity change 25 m/a in 5s, find the force acting on the body ​

Answer 1

Answer:

mass,m = 1 kg

initial velocity,u = 15 m/s

final velocity,v = 25 m/s

force = m*a

v = u+at

(v-u)/t = a

10/t = a

force,F = 1*10/t = 10/t N

Answer 2

Explanation:

Given, mass = 1kg

u = 15 ms^-1

v = 25 ms^-1

t = 5s

Now,

F = ma

F = m(v-u/t)

F = 1(25-15/5)

F = 10/5 = 5N

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