k/3
3k
`k^3`
k
`(1.4)^3 s`
`1/(1.4)^2 s`
`1.4 s`
`( 1.4)^2 s`
`(mv t^2)/(2t_1) `
`(mv t^2)/t_1`
`( mv^2 t^2)/(2t_1^2) `
`( m v^2 t_1^2)/(2t^2)`
`(2R)/3`
`(3R)/2`
`R`
`(5R)/2`
`1.96 kW`
`0.98 kW`
`12 kW`
`3.92 kW`
`3 :1`
`1 : 1`
`4 : 1`
`2 : 1`
`400 W`
`800 W`
`1600 W`
`3200 W`
kinetic energy equal to that of `A`
half the kinetic energy of `A`
twice the kinetic energy of `A`
kinetic energy one fourth of `A`
Energy supplied per unit time
Energy of an object due to its motion
Energy of an objects due to its position
none of the above
`1`
`-1`
`0`
infinity
`50 J`
`30 J`
`100 J`
zero
Both `III` and `IV`
Both `I` and `II`
`I , II ` and `IV`
Both `II` and `IV`
displacement
force applied
final velocity
initial velocity
Potential energy
Kinetic energy
Total linear momentum
Total mechanical energy
Joule
watt
Newton-second
Joule-second
its PE is converted into KE
its mechanical in to PE
its mechanical energy is converted in to heat energy
None of these
on the ground
at the maximum height
during the return journey
Both on the ground and at the maximum height
rational kinetic energy
elastic potential energy
Total energy
magnetic energy
`p = sqrt(2mE)`
`p = sqrt((2m)/E)`
`p = sqrt(E/(2m))`
`p = 2 mE`
`29.4 J`
`19.4 J`
`17.4 J`
`20.4 J`
Work done is a scalar quantity
Work done by a body does not depend on the time taken to complete the work
Work done can never be zero
SI unit of work is joule
it gains energy
it loses energy
its energy remains constant
None of the above
`10 %`
`20 %`
`25 %`
`50 %`
200 W
250 W
300 W
1080 W
1 and 3
1 and 2
Only 2
Only 1
Alpha particle-neutron-proton-electron
Proton-electron-neutron-alpha particle
Electron-proton-neutron-alpha particle
Neutron-proton-electron-alpha particle
Energy supplied per unit time
Energy of an object due to its motion
Energy of an object due to its position
None of the above
the lighter body has greater kinetic energy than the heavier body
the lighter body has lesser kinetic energy than the heavier .body
the kinetic energy of the lighter body is equal to the kinetic energy of the heavier body
the kinetic energy of both the bodies are independent of momentum
on the ground
at the maximum height
during the return journey
both on the ground and at the maximum height
linearly with square root of time
linearly with time
linearly with square of time
inversely with time
kinetic energy is always greater than zero
potential energy is greater than zero and kinetic energy is less than zero
potential energy is less than zero and kinetic energy is greater than zero
potential energy is zero and kinetic energy is less than zero
`1800 W`
`180 W`
`18000 W`
`18 W`
Its potential energy decreases while kinetic energy increases
Its kinetic energy decreases while potential energy increases
Both potential and kinetic energy decrease
Both potential and kinetic energy increase
Newton's first law of motion
Newton's second law of motion
Both Newton's second law motion and Newton's third law of motion
Conservation of energy