The SI of velocity is

1

(a)

\(ms^{ -1 }\)

(b)

\(ms^{ -2 }\)

(c)

\(ms^{ -3 }\)

(d)

\(Nm^{ -1 }\)

\(m/s^{ -2 }\) is the SI unit of 

1

(a)

distance

(b)

displacement

(c)

velocity

(d)

acceleration

A car goes from town A to another town B with a speed of 40 km/h and returns back to the town A with a speed of 60 km/h The average speed of the car during the complete journey is

1

(a)

48 km/h

(b)

50 km/h

(c)

zero

(d)

none of these

The initial velocity of a body is u.It is under uniform acceleration a its velocity v at any time t is given by

1

(a)

\(v=u+at^{ 2 }\)

(b)

\(v=u+\frac { 1 }{ 2 } at^{ 2 }\quad \)

(c)

v=u+at

(d)

v=u

In the equation: ​\(s=u+\frac { 1 }{ 2 } at^{ 2 }\quad \)s stands for distance covered in

1

(a)

t seconds

(b)

(t-1) seconds

(c)

(t+1) seconds

(d)

t th second

Displacement is a .......... quantity and distance is a ..................... quantity

1

(a)

  

What is the SI unit of displacement?

1

(a)

  

Whether the walls of your classroom are at rest or in motion? Explain.

1

(a)

Have you ever experienced that the train in which you are sitting appears to move while it is at rest? Explain.

1

(a)

What is locomotion?

1

(a)