EASY
9th CBSE
IMPORTANT
Earn 100

Give an example of a body moving with a uniform speed and uniform acceleration. Justify your answer.

Important Questions on Motion

MEDIUM
9th CBSE
IMPORTANT
By giving one example each, define: (a) uniform velocity, (b) variable velocity and (c) average velocity.
MEDIUM
9th CBSE
IMPORTANT
A motorcyclist drives from A to B with a uniform speed of 30 km h-1 and returns back with a speed of 20 km h-1. Find its average speed in  km h-1
MEDIUM
9th CBSE
IMPORTANT

A body starts from rest and moves along the x-axis with constant acceleration 5 m s-2 for 8 seconds. If it then continues with constant velocity. What distance (in metre) will the car cover in 12 seconds since it started from the rest? 

(Write only the magnitude of the answer in the given box)

MEDIUM
9th CBSE
IMPORTANT
How will the equations of motion for an object moving with a uniform velocity change?
MEDIUM
9th CBSE
IMPORTANT
Establish the formula v=u+at and s=ut+12at2 where symbols have usual meaning.
HARD
9th CBSE
IMPORTANT
Obtain a relation for the distance travelled by an object moving with a uniform acceleration in the interval between 4th and 5th seconds.
HARD
9th CBSE
IMPORTANT
Two stones are thrown vertically upwards simultaneously with their initial velocities u1and u2 respectively. Prove that the heights reached by them would be in the ratio of u12 : u22. (Assume upward acceleration is -g and downward acceleration to be +g).
MEDIUM
9th CBSE
IMPORTANT
Distance m 0 4 8 12 16
Time s 0 1 2 3 4

From the given table, plot the distance-time graph.

From the graph, calculate : (i) the average speed, (ii) the distance between 1.5 s and 3.5 s.