Describe the motion of an object shown in Fig. 9.28.

Describe the motion of an object shown in Fig. 9.28.

Ans: – In first five seconds object is seen moves at constant speed at 2ms–1. But in 5 to15 second it is in rest and then from 15 to 20 seconds object moving with the constant speed 2 ms–1.

So, motion of the object is not uniform.

 

Compare the velocity of two objects where motion is shown in Fig. 9.29.

Ans: – Object A velocity is 4 times to the velocity of object B.

 

Draw the graph for the motion of object A and B on the basis of data given in Table 9.10.

Ans: – 

 

 

 

 

 

 

 

 

 

 

 

 

 

A car accelerates from rest uniformly and attains a maximum velocity of2 ms–1 in 5 seconds. In next 10 seconds it slows down uniformly and comes to rest at the end of 10th second. Draw a velocity-time graph for the motion. Calculate from the graph (i) acceleration, (ii) retardation, and (iii) distance travelled.

Ans: –

 

A body moving with a constant speed of 10 ms–1 suddenly reverses its direction of motion at the 5th second and comes to rest in next 5 second. Draw a position-time graph of the motion to represent this situation.

Ans: – 

 

 

 

 

 

 

 

 

 

 

 

 

• Follow on Facebook page – Click Here
• Google News join in – Click Here