WorksheetsPra Pspm Quiz
Total questions: 18
Worksheet time: 9mins
Which of the following is correct in relation to SI unit?
I. Ampere is the base SI unit of current
II. Watt is the same as joule per second
III. Height and width have no unit but length has unit.
I, II & III
II & III
I & II
I only
The rate of change of velocity is called
acceleration
motion
momentum
inertia
An impulse is equivalent to
the change in mass of an object.
the change in volume of an object.
a force applied to an object for a period of time.
the original momentum of the object.
According to the conservation of momentum, the momentum before a collision should be __________ momentum after a collision.
twice the original momentum of the object's
greater than the
the same as the
less than the
A body at rest tends to remain at rest and a body in motion tends to remain in motion unless acted upon by an unbalanced force is stated in the Newton’s :
gravitation law
1st law
2nd law
3rd law
Four hundred grams of salami weighs
0.041 N
400 N
3.9 N
3.9 kN
What unit do scientists use to measure force?
Newton
Grams
Meters
Meter per second per second
What is the net force on the box shown below?
10 N to the left
10 N to the right
60 N to the left
50 N to the right
A woman presses against a wall with a force of 10 N for 10 min. The work she does is
0
1224 J
200 J
12 kJ
The total potential and kinetic energy of the particles in an object is called
thermal energy
electrical energy
chemical energy
mechanical energy
The magnitude of a gravitational force is dependent upon
the size of two or more objects and the distance between those objects.
the mass of two or more objects and the distance between those objects.
the mass of an object and how close it is to the center of the earth.
the matter inside two or more objects and their velocities.
A quarter of a circle contains
π/4 rad
π rad
π/2rad
2π rad
The linear velocity of a body rotating at ω rad/s along a circular path of radius r is given by
ω.r
ω/r
ωs2.r
ωs2/r
An angular velocity of 25 revolution per second equivalent to
50π rad/s
25π rad/s
0.014π rad/s
0.83π rad/s
How long does it take for a rotating object to speed up from 15.0 rad/s to 33.3 rad/s if it has a uniform angular acceleration of 3.45 rad/s2?
4.35 s
5.30 s
10.6 s
63.1s
Heat in insulated material is transferred from:
cold to hot region
hot to cold region
loss to surrounding
not transferred
Unit of the rate of heat transfer is
Joule
Newton
Pascal
Watt
How are the pressure and volume of a gas related at constant temperature?
As pressure increases, volume increases
As pressure increases, volume decreases
As pressure increases, volume remains constant
As pressure constant, volume decreases
