Work And Power
Muhtasari
Every machine, engine and living body does work by applying forces over distances. The amount of work you do equals the energy you transfer, and how quickly you do it determines your power.
In this lesson you will learn the equations for work done, gravitational potential energy and kinetic energy, see how conservation of energy links them, and calculate power as the rate of doing work.
Malengo
- Know and use the relationship: work done = force x distance moved
- Know that work done is equal to energy transferred
- Know and use the relationship for gravitational potential energy
- Know and use the relationship for kinetic energy
- Understand how conservation of energy produces a link between gravitational potential energy, kinetic energy and work
- Describe power as the rate of transfer of energy or the rate of doing work
- Use the relationship between power, work done and time taken
Maelezo ya Somo
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Tathmini ya Somo
Hongera kwa kukamilisha somo la Work And Power. Sasa kwa kuwa umechunguza dhana na mawazo muhimu, ni wakati wa kuweka ujuzi wako kwa mtihani. Sehemu hii inatoa mazoezi mbalimbali maswali yaliyoundwa ili kuimarisha uelewaji wako na kukusaidia kupima ufahamu wako wa nyenzo.
Utakutana na mchanganyiko wa aina mbalimbali za maswali, ikiwemo maswali ya kuchagua jibu sahihi, maswali ya majibu mafupi, na maswali ya insha. Kila swali limebuniwa kwa umakini ili kupima vipengele tofauti vya maarifa yako na ujuzi wa kufikiri kwa makini.
Tumia sehemu hii ya tathmini kama fursa ya kuimarisha uelewa wako wa mada na kubaini maeneo yoyote ambapo unaweza kuhitaji kusoma zaidi. Usikatishwe tamaa na changamoto zozote utakazokutana nazo; badala yake, zitazame kama fursa za kukua na kuboresha.
- Work done is calculated using: A) W = mv B) W = Fd C) W = mgh D) W = Pt Answer: B
- 1 watt is equal to: A) 1 J/min B) 1 N/s C) 1 J/s D) 1 kg m/s Answer: C
- Doubling the speed of an object multiplies its KE by: A) 2 B) 4 C) 8 D) 0.5 Answer: B
- A 2 kg ball at 10 m height has GPE (g = 10 N/kg) of: A) 20 J B) 200 J C) 100 J D) 2000 J Answer: B
- Power is defined as: A) Force x distance B) Energy x time C) Rate of doing work D) Mass x acceleration Answer: C
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Vitabu Vinavyopendekezwa
Fanya Mazoezi ya Maswali ya Majaribio
Ungependa kufanya mazoezi ya maswali ya majaribio kuhusu Work And Power? Pakua programu ya Green Bridge CBT ili kupata maswali ya majaribio na tathmini kamili za mazoezi kuhusu mada hii.
Pakua Programu Kwenye Google Playstore
Kila kitu unachohitaji ili kufaulu katika JAMB, WAEC & NECO.
