The basic unit of speed is
km/ min
m/min
km/h
m/s
An athlete attains a maximum speed of 36 km / h . This speed is equal to
5 m / s
10 m / s
15 m / s
20 m / s
The regular vibrations of which of the following electrically driven crystals are used for measuring time very accurately
Calcite crystals
quadric crystals
Chrome crystals
Quartz crystals
The clocks and watches which are used for measuring time are based on :
Rectilinear motion
Circular motion
Periodic motion
Rotational motion
Motion of a mango falling from a tree is
oscillatory motion
translatory motion
at rest
rotatory motion
The girl on the bicyle is in _______ in relation to the road.
rest
motion
oscillary motion
rotationary motion
The composition of air can be best represented by drawing a
Pie chart
Bar graph
Line graph
Histogram
A student draws a distance - time graph for a moving scooter and finds that a section of the graph is a horizontal line parallel to the time axis. Which of the following conclusion is correct about this section of the graph
The scooter has uniform speed in this section
The distance travelled by scooter is the maximum in this section
The distance travelled by the scooter is the minimum in the section
The distance travelled by the scooter is zero in this section
This goes fast
Air plane
Train
Bus
Car
The correct relation between speed, distance and time is
speed= distance / time
speed= time / distance
speed= distance x time
distance= speed / time
