Slope of the velocity - time graph gives

(a)

speed

(b)

displacement

(c)

distance

(d)

acceleration

The area under velocity – time graph represents the

(a)

velocity of the moving object

(b)

displacement covered by the moving object

(c)

speed of the moving object

(d)

acceleration of the moving object

A car is being driven at a speed of 20 ms^-1 when brakes are applied to bring it to rest in 5 s. The decelaration produced in this case will be

(a)

+4 ms^-2

(b)

‒4 ms^-2

(c)

‒0.25 ms^-2

(d)

+0.25 ms^-2

Unit of acceleration is

(a)

ms^-1

(b)

ms^-2

(c)

ms

(d)

ms²

Which one of the following is most likely not a case of uniform circular motion?

(a)

Motion of the Earth around the Sun

(b)

Motion of a toy train on a circular track

(c)

Motion of a racing car on a circular track.

(d)

Motion of hours' hand on the dial of the clock

Speed is never ______

(a)

fraction

(b)

negative

(c)

zero

(d)

positive

During uniform motion, the change in velocity is _______

(a)

zero

(b)

infinity

(c)

constant

(d)

one

If velocity of a body decreases in equal intervals of time it is termed ______

(a)

uniform acceleration

(b)

non-uniform acceleration

(c)

negative acceleration

(d)

positive acceleration

Negative acceleration is expressed in ______

(a)

m/s

(b)

-m/s

(c)

-m/s²

(d)

m/s²

The velocity time graph is parallel to X-axis it shows _______.

(a)

uniform velocity of an object

(b)

non-uniform velocity

(c)

stationary position of an object

(d)

acceleration motion of an object

In which direction of the motion of the particles does centripetal force act?

(a)

parallel

(b)

radial

(c)

tangential

(d)

perpendicular

In a 50 m race the winner takes 5 s to reach the finishing point. The average speed of the winner is ______

(a)

20 m/s

(b)

25 m/s

(c)

10 m/s

(d)

500 m/s

Speed is a ____________ quantity whereas velocity is a ____________ quantity

A PHP Error was encountered

Severity: Warning

Message: A non-numeric value encountered

Filename: material/details.php

Line Number: 1002

()

  scalar, vector

The slope of the distance – time graph at any point gives __________.

A PHP Error was encountered

Severity: Warning

Message: A non-numeric value encountered

Filename: material/details.php

Line Number: 1002

()

speed

Consider an object is rest at position x = 20m. Then its displacement – time graph will be straight line to _____________ the axis.

A PHP Error was encountered

Severity: Warning

Message: A non-numeric value encountered

Filename: material/details.php

Line Number: 1002

()

Parallel to

Negative acceleration is called ____________

A PHP Error was encountered

Severity: Warning

Message: A non-numeric value encountered

Filename: material/details.php

Line Number: 1002

()

retardation (or) deceleration

The graph of uniform motion is _____

A PHP Error was encountered

Severity: Warning

Message: A non-numeric value encountered

Filename: material/details.php

Line Number: 1002

()

Straight line

During uniform motion of an object along a straight line, the change in the velocity is ______

A PHP Error was encountered

Severity: Warning

Message: A non-numeric value encountered

Filename: material/details.php

Line Number: 1002

()

Zero

The displacement made in one second is _______

A PHP Error was encountered

Severity: Warning

Message: A non-numeric value encountered

Filename: material/details.php

Line Number: 1002

()

Speed

Give an example of a motion in which the displacement is zero, but the distance travelled is not zero ______

A PHP Error was encountered

Severity: Warning

Message: A non-numeric value encountered

Filename: material/details.php

Line Number: 1002

()

Circular motion

For a freely falling body the acceleration 'a' is replaced by s.

(a) True

(b) False

An object under uniform circular motion experiences centripetal force

(a) True

(b) False

The motion of the object could be uniform or non-uniform depending on its speed.

(a) True

(b) False

Giant wheel moves a vertical linear path.

(a) True

(b) False

The area under the velocity-time graph is equal to the magnitude of the displacement.

(a) True

(b) False

Motion of a body covering equal distances in equal interval of time

(1)

m/s

Motion with non uniform acceleration

(2)

Speed

(3)

m/s

Velocity

(4)

\(\frac { 1 }{ 2 } \)gt²

S

(5)