Question

For how much time should a force of 200N acts on an object having mass 5kg, so as to increase its velocity from 50m/s to 100m/s. Find this

Answer 1

Force = 200 N

Mass = 5 kg

Initial velocity ( u ) = 50

Final velocity ( v ) = 100

For this problem ,we can use the formula ,

                           F = m ( v - u ) ÷ t

  Since we need ' t ' , lets rearrange it as,

                        t  =  m ( v - u ) ÷ F

                           =   5 × ( 100 - 50 ) ÷ 200

                           =   5 × 50 ÷200

                           = 1.25 seconds .

Answer 2

Answer:

Explanation:

Force = 200 N

Mass = 5 kg

Initial velocity ( u ) = 50

Final velocity ( v ) = 100

For this problem ,we can use the formula ,

                          F = m ( v - u ) ÷ t

 Since we need ' t ' , lets rearrange it as,

                       t  =  m ( v - u ) ÷ F

                          =   5 × ( 100 - 50 ) ÷ 200

                          =   5 × 50 ÷200

                          = 1.25 seconds .