CDF POINTS
1.For a body moving along a straight line with uniform acceleration,
a) V=u+ at b)\(S = ut + \frac{1}{2}a{t^2}\) c)\({V^2} - {u^2} = 2as\) d) \({S_n} = u + \frac{a}{2}(2n - 1)\)
e)\(\frac{S}{t} = \left( {\frac{{u + v}}{2}} \right)\)
2.If a body starts from rest and moves with uniform acceleration then S, V\(\alpha S\) and V \(\alpha\) t
3.If a body moves with constant velocity, S t and V is constant.
4.If a body starts from rest and moves with an acceleration which increases at a steady rate with line, then S, V, a t.
5.When a particle moves along a straight line with uniform acceleration, difference between the distances covered during successive seconds is equal to its acceleration.
6. If the particle starts from rest and moves with constant acceleration difference between the distances covered during successive seconds is equal to its acceleration and the ratio of those distances will be equal to ratio of odd integers.
7. A particle moving along a straight line with uniform acceleration crosses points A and B with velocities V1, and V2. If C is the mid point of AB, it crosses C with a velocity equal to \(\sqrt {\frac{{V_1^2 + V_2^2}}{2}} \)
8. If a particle starts from rest and moves with uniform acceleration 'a' such that it travels distances Sm and Sn in the mth and nth seconds then a =\(\frac{{{S_m} - {S_n}}}{{(m - n)}}\)
9.A particle starts from rest and moves along a straight line with uniform acceleration. If S is the distance travelled by it n seconds and is the distance travelled in the nth second, then=\(\frac{{{S_n}}}{S} = \frac{{\left( {2n - 1} \right)}}{{{n^2}}}\)
10.If a body starting from rest moves with acceleration a for certain time and then decceleration at the rate B. Until it stops and 't' is the total time of its motion,
maximum velocity of the body (V) =\(\frac{{\alpha \beta t}}{{\left( {\alpha + \beta } \right)}}\)
average velocity = V/2
distance travelled by the body (S)=\(\frac{{\alpha \beta {t^2}}}{{2\left( {\alpha + \beta } \right)}}\)
11.. If a bullet loses (1/n) of its velocity while passing through a plank, then the minimum number of planks required to stop the bullet is \(\left( {\frac{{{n^2}}}{{2n - 1}}} \right)\)
CDF POINTS
1.For a body moving along a straight line with uniform acceleration,
a) V=u+ at b)\(S = ut + \frac{1}{2}a{t^2}\) c)\({V^2} - {u^2} = 2as\) d) \({S_n} = u + \frac{a}{2}(2n - 1)\)
e)\(\frac{S}{t} = \left( {\frac{{u + v}}{2}} \right)\)
2.If a body starts from rest and moves with uniform acceleration then S, V\(\alpha S\) and V \(\alpha\) t
3.If a body moves with constant velocity, S t and V is constant.
4.If a body starts from rest and moves with an acceleration which increases at a steady rate with line, then S, V, a t.
5.When a particle moves along a straight line with uniform acceleration, difference between the distances covered during successive seconds is equal to its acceleration.
6. If the particle starts from rest and moves with constant acceleration difference between the distances covered during successive seconds is equal to its acceleration and the ratio of those distances will be equal to ratio of odd integers.
7. A particle moving along a straight line with uniform acceleration crosses points A and B with velocities V1, and V2. If C is the mid point of AB, it crosses C with a velocity equal to \(\sqrt {\frac{{V_1^2 + V_2^2}}{2}} \)
8. If a particle starts from rest and moves with uniform acceleration 'a' such that it travels distances Sm and Sn in the mth and nth seconds then a =\(\frac{{{S_m} - {S_n}}}{{(m - n)}}\)
9.A particle starts from rest and moves along a straight line with uniform acceleration. If S is the distance travelled by it n seconds and is the distance travelled in the nth second, then=\(\frac{{{S_n}}}{S} = \frac{{\left( {2n - 1} \right)}}{{{n^2}}}\)
10.If a body starting from rest moves with acceleration a for certain time and then decceleration at the rate B. Until it stops and 't' is the total time of its motion,
maximum velocity of the body (V) =\(\frac{{\alpha \beta t}}{{\left( {\alpha + \beta } \right)}}\)
average velocity = V/2
distance travelled by the body (S)=\(\frac{{\alpha \beta {t^2}}}{{2\left( {\alpha + \beta } \right)}}\)
11.. If a bullet loses (1/n) of its velocity while passing through a plank, then the minimum number of planks required to stop the bullet is \(\left( {\frac{{{n^2}}}{{2n - 1}}} \right)\)