Advertisements
Advertisements
Question
A body starts with an initial velocity of 10m s-1 and acceleration 5 m s-2. Find the distance covered by it in 5 s.
Advertisements
Solution
Initial velocity u = 10 m/s
Acceleration a = 5 m/s2
Time t = 5s
Let 'S' be the distance covered.
Using the second equation of motion,
S = ut + (1/2) at2
S = (10)(5) + (1/2) (5) (5) 2
S = 50 + 62.5
S = 112.5 m
APPEARS IN
RELATED QUESTIONS
A farmer moves along the boundary of a square field of side 10 m in 40 s. What will be the magnitude of displacement of the farmer at the end of 2 minutes 20 seconds?
If on a round trip you travel 6 km and then arrive back home :
What is your final displacement ?
What can you say about the nature of motion of a body if its displacement-time graph is A straight line parallel to the time axis?
How is the distance related with time for motion under uniform acceleration such as the motion of a freely falling body?
Figure ahead represents the displacement - time sketch of motion of two cars A and B . Find :
(i) the distance by which the car B was initially ahead of car A.
(ii) the velocities of car A and car B.
(iii) the time in which car A catches car B.
(iv) the distance from start when the car A will catch the car B.

Figure shows the velocity-time graph of a particle moving in a straight line.

(i) State the nature of motion of particle.
(ii) Find the displacement of particle at t = 6 s.
(iii) Does the particle change its direction of motion?
(iv) Compare the distance travelled by the particle from 0 to 4 s and from 4 s to 6 s.
(v) Find the acceleration from 0 to 4 s and retardation from 4 s to 6 s.
Can a body have negative displacement?
A body is moving along a circular path of radius r. What will be the distance and displacement of the body when it completes:
Half a revolution
A body is moving along a circular path of radius r. What will be the distance and displacement of the body when it completes:
Two full revolutions
If the displacement-time graph of a particle is parallel to the time axis, the velocity of the particle is ______.
