Question

. A constant force acts on a 5lb object and reduces its velocity from 75km/h to 35km/h in a time of 3s. Find the force.

Answer 1

Answer:

30 newton

Explanation:

a=(v-u)÷t

=(35-75)÷3

=-40÷3

=-13.33 (retardation)

=13.33ms-1

5lb=2.27kg

f=m×a

=2.27×13.33

30 N