**51.**

Here are the graphs of \(v\rightarrow t\) of a moving body. Which of them is not suitable ?

(1).

(2).

(3).

(4).

**52.**

In the figure there is a graph of velocity \(\rightarrow \) time for a particle. Which area shows the displacement covered by the particle after time t ?

**A.** Closed fig. AODCA

**B.** Closed fig. ABCA

**C.** Closed fig. AODCBA

**D.** none of above

**Answer :** Option C

**53.**

In the figure there is a graph of velocity \(\rightarrow \) time for a particle. Which part shows initial velocity of the particle ?

**54.**

In the figure there is a graph of velocity \(\rightarrow \) time for a particle. How will you calculate the acceleration of the particle ?

**A.** taking length of AB

**B.** taking magnitude of BC

**C.** taking slope of AC

**D.** taking slope of AB

**Answer :** Option D

**55.**

Given graph shows relation between position and time. Find correct graph of acceleration \(\rightarrow \) time

.1 .2 .3 .4