The energy required to raise a given volume of water from a well can be:
Mega watts
Mega newton
Mega joules
Kilo watts
Mechanical work done is equal to: (symbols have their usual meaning)
W=F/S
W=FS
W=F+S
W=F
By what factor does the kinetic energy of a particle increase if the velocity is increased by a factor of three?
6
7
8
9
A stone tied to a string is whirled in a circle,the workdone on it by the string is :
Positive
Negative
Zero
Undefined
A compressed spring possesses which type of energy ?
Kinetic
Elastic potential
Electric
Magnetic
Which type of energy does the flowing water possess ?
Gravitational
Potential
Electrical
What is the momentum of a body of mass 100 g, having a K.E.of 20 J ?
2 kg ms-1
1/2 kg ms-1
2 g cm s-1
.2 kg cm s-1
A bird flying in the sky has :
K.E. only
P.E. only
Neither K.E. nor P.E.
Both K.E. and P.E.
A body of mass 20kg is dropped from a height of 2m. If g is taken to be equal to 10m/s2. Calculate the kinetic energy of the body just before striking the ground ?
400 J
4 J
40 J
.4 J
Two bodies of equal weight are kept at heights of h and 1.5 h respectively.The ratio of their P.E. is
3 : 2
2 : 3
1 : 1
1 : 2
