Hello,

Given that the distance is directly proportional to the square of time.

So, d ∝ t^2

So, d = k.t^2

Where, k is the constant of proportionality.

Now from first condition,

d = 78m and t = 7 sec.

So, 78 = k. 7^2

So, k = 1.59 =

Using s = ut + 1/2a(t^2),  we can write

100 = 4u  + 8a

=> u + 2a = 25             ------(1)

Also, Since the distance traveled in the next 4 seconds is 140m, the total distance traveled in the 8 seconds is 240 m. So we can write

240 =

Hii

Finding the trignometric function values for all angle is very difficult.  You need to first remember the standard ones like 0,30,45,60,90. And then you can use some trignometric formulas to calculate some other angles like 15,75 etc.. Finding every angle manually is very difficult.

Hope it helps

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HI aspirant,

S=u+1/2a(2n-1)
10=u+1/2a(7)...(1)
15=u+1/2a(11)...(2)
Subtract eq(1)&(2)
a=5/2m/s^2
U=5/4m/s
After next third second
S9=5/4+1/2×5/2(2×9-1)
S9=22.5m

hence is the answer. you must use this formula to obtain the answer. with this base formula you can solve n number of questions asked in n number of ways. be clear in concepts

all

Hello,

The sectional cutoff for all the sections for sbi clerk mains is decided from state to state. But is almost same for all the states. I have made a table for sbi mains sectional cutoff for Rajasthan state for previous year. It is expected to be nearly same for