Class 7 - Heat and Motion and time Q.1

the S.I unit of speed is

• cm/s

• cm

• m

• m/s

Tags

NGSS.MS-PS3-1

Motion which repeats itself in a regular intervals of time is called ..............

• Linear motion

• circular motion

• periodic motion

• irregular motion

Motion of objects can be presented in pictorial form by their...............

• distance- speed graph

• distance-time graph

• time-time graph

• speed- distance graph

Tags

NGSS.MS-PS3-1

Which of the following graph represents body is at rest position?

• 
• 
• 
• 

Which of the following cannot be used for measuring time?

• A leaking tap

• simple pendulum

• shadow of an object during the day

• blinking of eyes

Observe the figure.

The time period of a simple pendulum is the time taken by it to travel from

• A to B and back to A

• O to A, A to B and B to A

• B to A, A to B and B to O

• A to B

The given graph represents

• Speed of A < Speed of B

• Speed of B < Speed of A

• Speed of A = Speed of B

• body is at rest

Tags

NGSS.MS-PS3-1

Motion of earth is a combination of

• linear and circular motion

• circular and irregular motion

• linear and periodic motion

• circular and periodic motion

A simple pendulum takes 24 seconds to complete 30 oscillations. What is the time period of the pendulum?

• 2.4 s

• 1.6 s

• 0.6 s

• 1.2 s

90 kmph = ............ m/s

• 20

• 25

• 30

• 35