Welcome to your work , Energy & power - 3
3.
When friction does negative work, KE
4.
If velocity doubles, kinetic energy becomes
5.
Which unit is largest?
6.
If θ = 180°, work done is
8.
Work done by friction on a moving body is usually
9.
If force is zero, work done is
11.
Which force does zero work always?
12.
Dimension of kinetic energy is
13.
Work done by centripetal force in circular motion is
14.
Action–reaction forces do
15.
Kinetic energy is maximum when
16.
Work done by gravity on freely falling body is
17.
Body moving with constant velocity has
18.
Work done by road on skidding cycle is
19.
Work done by a constant force is defined as
20.
SI unit of kinetic energy is
21.
Work–energy relation links
23.
Work done by cycle on road is
25.
Work done is zero when force is
26.
Which has maximum kinetic energy?
27.
A weightlifter holding weight stationary does
28.
Work done by normal reaction on smooth surface is
29.
If θ < 90°, work done is
30.
Kinetic energy of a body depends on
31.
KE formula is valid for
32.
Which quantity is always conserved?
33.
A moving bullet has high KE because
35.
Kinetic energy is a measure of
37.
Which energy depends on motion?
38.
Work done on body equals change in
39.
A body at rest has kinetic energy
40.
If KE becomes zero, body
41.
Kinetic energy is always
42.
Energy unit same as work because
43.
Kinetic energy depends on
44.
When brakes are applied, KE
45.
If mass doubles, kinetic energy becomes
