Question

A force of 20 N acts upon a body whose weight is 9.8N . what is the mass and acceleration produced in the body ?(g=9.8 m/s 2 )

Answer 1

Force:

Force is cause that changes the state of rest or of motion of a body.

Acceleration: acceleration is the rate of change of velocity of any body with respect to time.

An  acceleration of a body is the net result of any and all number of forces acting on the body , as per  Newton's Second Law of motion.

Mass of the body :m =w/g=9.8/9.8=1 kg mass...acceleration: ..F=ma20 =1× a...a = 20 m/s2..Mass is  1 kg ,and acceleration is 20m/s2..

Hence the answer.

Answer 2

F=-20N

W=9.8N

We knot that

W=mg

9.8=m×9.8

9.8÷9.8=m

1kg=mass

We also know

F=ma

20=1×a

20=acceleration