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WorksheetsTrial UPS
Total questions: 13
Worksheet time: 7mins
Which of the following is FALSE about dimensional analysis?
Technique or method in which the physical quantity can be expressed in terms of combination of basic quantities.
A measure of physical quantity (without numerical values)
Dimension on the left hand side of an equation (L.H.S.) equals to the dimension on the right hand side of an equation (R.H.S)
Dimensions can be added or subtracted
What is the dimension of π?
L⁻¹T
ML⁻¹
ML⁻²
1
Which of the following quantities is a scalar quantity?
Displacement
Work
Velocity
Force
How do you calculate average velocity?
A time interval divided by a change of displacement
A time interval multiply by a change of displacement
A change of displacement divided by a time interval
Addition of a time interval and a change of displacement.
The rate of change of velocity is called...
Acceleration
Force
Speed
Distance
Which of the following represents the displacement?
area under acceleration-time graph
area under velocity-time graph
gradient under acceleration-time graph
gradient under velocity-time graph
A projectile is launched from the ground. Assuming that air resistance is negligible, which of the following statements is FALSE?
The motion involves constant velocity along the horizontal and constant acceleration along the vertical.
The vertical component of the velocity along the motion is constant.
The horizontal component of the velocity along the motion is constant.
The path made by the projectile is a parabolic.
FIGURE shows the positions of an object undergoes projectile motion at different time, t. At which point, one of velocity’s components of the object is zero?
Point P
Point Q
Point R
Point S
Linear momentum is a
Scalar quantity
Force
product of mass and acceleration
product of velocity and mass
The principle of conservation of linear momentum states that
the total initial momentum of all objects interacting with one another is not equal the total final momentum
the total initial momentum of all objects interacting with one another is equal to the total final momentum.
the total initial momentum of all objects interacting with one another is more than the total final momentum
the total momentum of all objects interacting with one another is always remains not conserved
Elastic collision and inelastic collision can be differentiated by
Kinetic energy
force
momentum
impulse
What are the forces exerted on an object placed on a flat smooth surface?
Weight and frictional force
Normal force and weight
Weight, frictional force and normal force
Weight and external force
Which of the following statements is TRUE about Newton's Second law of motion?
A vector sum of all forces acting on a particle must be zero
For every action, there is an equal and opposite reaction force
An object remains at rest or in uniform motion in a straight line unless acted upon by an external force
The acceleration of the object directly proportional to the net force acting on it and inversely proportional to its mass
