Worksheetswork, power and energy
Total questions: 10
Worksheet time: 4mins
What do you think is happening to Tom?
no potential energy
potential energy is more
kinetic energy is zero
both potential energy and kinetic energy is existing
What do you think about this picture?
Engine is about to explode
has lot of horsepower
no friction
plenty of friction
What is the work done?
zero
non-zero
What kind of energy acts in this picture?
Gravitational potential energy
Elastic potential energy
atomic energy
Electrostatic energy
potential energy is more for sphere
potential energy is more for cart
kinetic energy is zero for sphere
both A and C
When force is 5 N and displacement is 20 m. what is the work done?
100 J
100 N
10 Nm
both A and B
Work done is maximum when ___________
Force is maximum
Force and displacement are in opposite direction
no force acts on the object
when scalar product of force and displacement is maximum
Work done by a frictional force is
negative
positive
zero
none of the above
If a particle is rotating in a circle, which of the following is true?
No work is done
Particle has no acceleration
velocity of particle is constant
No force is acting on the particle
Potential energy is given by U= 5x2 + 6x. what could be the for force?
100x + 6
-10x - 6
10x + 3x2
x + 3x2
