Question

a force of 10N acts on a body of mass 1kg at rest the work done by the body in 4 seconds is a)80J b)8000J c)8J d)8000J​

Answer 1

✯Question:

• A force of 10N acts on a body of mass 1Kg at rest. Calculate the work done by the body in 4seconds.

✯Solution:

   ➢Given:

• u = 0m/s (Body is at rest)
• F = 10N
• m = 1Kg
• t = 4s

    ➢To find:

• Work done

     ➢Answer:

• S= ut + ½ at²
• S= ½ × 10 × 16
• S= 80
• Displacement of the body is 80m

      ➢We know:

• Work done = Force × Displacement
• W = F × S
• W = 10 × 80
• W = 800J

✭ The work done is 800J

Answer 2

Answer:

$b). \: 800j \\ hope \: its \: help \: you$