Question

certain force acting on a 20 kg mass changes its velocity
from 5m/s to 2m/s. calculate the work done by the force​

Answer 1

Given:
Certain force acting on a 20 kg mass changes its velocity from 5m/s to 2m/s.
Find:
Calculate the work done by the force.
Know terms:
Mass = (m)
Initial velocity = (u)
Final velocity = (v)
Work done = (a)
Joule = (J)
Using formula:
⇒
⇒
Calculations:
⇒
⇒
⇒
Therefore, -210 J is the work done by the force.

Answer 2

Answer:

60 J

Step-by-step explanation:

W= f*d. ie.force*displacement

W=20*(5-2)J

W=60J