Physics chapter 1 (set 1)

The equation below is dimensionally correct. P and v represent pressure and velocity respectively. the unit of a is similar to that of?

 $P\ +\ av^2\ =\ b$  

• Mass

• Volume

• Density

• Force

2. What do scalar and vector have in common?

• Scalar and vector both have magnitude and direction

• Scalar and vector both have direction

• Scalar and vector both have magnitude

• Scalar and vector are not physical quantity

3. The rate at which velocity changes with time

• Speed

• Velocity

• Acceleration

• Free fall

4. How fast an object is moving and in which direction is the definition of

• Speed

• Acceleration

• Velocity

• Free Fall

5.Which of the following is a vector

• length

• volume

• velocity

• work

6.An example of scalar quantity is

• Displacement

• Speed

• Velocity

• Torque

7.The scalar product of two vectors is maximum when they are:

• Parallel

• perpendicular

• Anti parallel

• Anti perpendicular

8.The direction of torque can be found by

• Head to tail rule

• Right hand rule

• Left hand rule

• Flemingo rule

Dimensions for acceleration due to gravity is

• $MLT^{-1}$

• $LT^{-1}$

• $LT^{-2}$

• $M^{ }LT^{-2}$

Dimension below refer to which quantity?

 $LT^{-1}$  

• acceleration

• velocity

• momentum

• energy