A workshop machine works at for the first and then at for the next

PHYSICS · Single correct · GCSE · Physics · Energy · Energy

Problem

A workshop machine works at

500\,\text{W}

for the first

2\,\text{minutes}

and then at

1.5\,\text{kW}

for the next

30\,\text{s}

. Find the total work done during the whole period. (a)

6.0 \times 10^{4}\,\text{J}

(b)

1.05 \times 10^{5}\,\text{J}

(c)

1.50 \times 10^{5}\,\text{J}

(d)

9.0 \times 10^{4}\,\text{J}