Skip to content

Course home

Sign up

1.7 Energy, work and power

EasyMedium
1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889
Question 17

A student carries out four different physical exercises. Take the acceleration due to gravity to be g=10 m/s2g = 10\text{ m/s}^2g=10 m/s2.

In which exercise is the most work done?

A

Lifting a 3 kg3\text{ kg}3 kg mass through 1.5 m1.5\text{ m}1.5 m

B

Pushing through 5 m5\text{ m}5 m against a frictional force of 8 N8\text{ N}8 N

C

Lifting a 1.5 kg1.5\text{ kg}1.5 kg mass through 4 m4\text{ m}4 m

D

Pulling through 6 m6\text{ m}6 m against a frictional force of 9 N9\text{ N}9 N

Markscheme

1.7 Energy, work and power Questions

  1. IGCSE
  2. /Physics
  3. /1.7 Energy, work and power

533 exam-style questions on CIE IGCSE Physics 1.7 Energy, work and power, covering 1.7.1a Energy stores and energy transfers, 1.7.1b Conservation of energy, 1.7.1c Kinetic and gravitational potential energy, 1.7.2 Work done, 1.7.3 Energy resources, 1.7.3a Energy resources and electricity generation, 1.7.3b Nuclear fusion as an energy source, 1.7.3c Efficiency of energy transfer, and 1.7.4 Power. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank