Question

A student’s calculation for the work done on an object is shown.

W=F×Δd


W=(140 N)×(30 cm)


W=4,200 J


Which statement describes the error in the work?

(1 point)
Responses

The distance must be converted to meters.
The distance must be converted to meters.

The units for work are incorrect.
The units for work are incorrect.

The force must be converted to joules.
The force must be converted to joules.

The operation is incorrect.

Answer 1

The distance must be converted to meters.

Use SI units: W = 140 N × 0.30 m = 42 J (not 4,200 J).