Easy Physics 1 (Ch: 1, 2 & 3)

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

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

• Force
• Speed
• Distance
• Acceleration

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.

Linear momentum is a

• scalar quantity
• force
• product of velocity and mass
• product of mass and acceleration

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
• momentum
• force
• impulse

What is the Dimension for the following Base physical quantity:

Mass

• [M]

• [L]

• [T]

• [𝜃]

• [A]