Define: $(a)$ power $(b)$ work done $(c)$ kinetic energy. Give the $SI$ unit of each.
(N/A) Power is defined as the rate of doing work or the rate of transfer of energy. Its $SI$ unit is watt $(W)$.
$(b)$ Work done is defined as the product of the force applied on an object and the displacement produced in the direction of the force. Its $SI$ unit is joule $(J)$.
$(c)$ Kinetic energy is the energy possessed by an object due to its motion. Its $SI$ unit is joule $(J)$.
$(b)$ Work done is defined as the product of the force applied on an object and the displacement produced in the direction of the force. Its $SI$ unit is joule $(J)$.
$(c)$ Kinetic energy is the energy possessed by an object due to its motion. Its $SI$ unit is joule $(J)$.
Explore More
Similar Questions
$(i)$ State the law of conservation of energy.
$(ii)$ Show that the total mechanical energy of a freely falling body is conserved.
$(ii)$ Show that the total mechanical energy of a freely falling body is conserved.
Difficult
View SolutionCan any object have mechanical energy even if its momentum is zero? Explain.
Medium
View SolutionIf an electric iron of $1200 \, W$ is used for $30$ minutes everyday, find the electric energy consumed in the month of April. (in $kWh$)
Medium
View SolutionState whether the following statement is true or false:
When a body falls on the ground and stops,the principle of conservation of energy is violated.
When a body falls on the ground and stops,the principle of conservation of energy is violated.
Easy
View Solution$(a)$ State the law of conservation of energy. Explain it with one example.
$(b)$ Two girls,each of weight $400 \, N$,climb up a rope to a height of $8 \, m$. Girl $A$ takes $20 \, s$ while Girl $B$ takes $50 \, s$ to accomplish the task. What is the power expended by each girl?
$(c)$ An electric heater is rated $1500 \, W$. How much energy does it use in $10 \, h$?
$(b)$ Two girls,each of weight $400 \, N$,climb up a rope to a height of $8 \, m$. Girl $A$ takes $20 \, s$ while Girl $B$ takes $50 \, s$ to accomplish the task. What is the power expended by each girl?
$(c)$ An electric heater is rated $1500 \, W$. How much energy does it use in $10 \, h$?
Medium
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo