Advertisements
Advertisements
प्रश्न
A bus moving along a straight line at 20 m/s undergoes an acceleration of 4 m/s2. After 2 seconds, its speed will be:
पर्याय
8 m/s
12 m/s
16 m/s
28 m/s
Advertisements
उत्तर
28 m/s
Acceleration of the moving object is 4 m/s2
Initial velocity is 20 m/s.
Time taken is 2 sec.
By applying 1st equation of motion we get,
v = u + at
= 20 + 2(4)
= 28 m/s
So, the answer is
(d) 28 m/s
APPEARS IN
संबंधित प्रश्न
Arrange the following speed in increasing order (keeping the least speed first):
An athlete running with a speed of 10 m/s.
A car is moving along a straight road at a steady speed. It travels 150 m in 5 seconds:
How far does it travel in 6 seconds ?
A car is moving along a straight road at a steady speed. It travels 150 m in 5 seconds:
How long does it take to travel 240 m ?
Which of the following could not be a unit of speed?
Give one example of following motion :
Uniform velocity
Give one example of following motion :
Variable velocity
A train takes 2 h to reach station B from station A, and then 3 h to return from station B to station A. The distance between the two stations is 200 km. Find:
The average speed,
The average velocity of the train.
For the motion with uniform velocity , how is the distance travelled related to the time ?
The velocity-time graph of a moving body is given below in Figure
Displacement in each part AB, BC and CD.
Define speed of a body.
