Question

what is the answer and solve it correctly​

Answer 1

Answer:

Explanation:

GIVEN=

MASS OF A BODY=500gm=0.5kg

force applied on body=20N

initial velocity of body=20m/s

final velocity of a body=0m/s

TO FIND=

TIME REQUIERD=?

SOLUTION=

PLZ FOCUS ON THE DIMENSIONS ALSO AS FORCE IS GIVEN IN NEWTON SO U MUST HAVE TO TAKE MASS IN KG AND THEN SOLVE

AND AS IT IS DEACCILARTION TAKE FORCE AS NEGATIVE

F=Ma

-20=0.5*a

a=-40m/sec^2

THERFORE BY USING EQUATIONS OF UNIFORM ACCILARATRY MOTION:-

V=U+aT

0=20-40T

40T=20

T=1/2SEC

THERFORE,TIME REQUIRED TO STOP A BODY IS 1/2SEC

HOPE MY ANSWER HELPS U BROTHER