SPARKLING PHYSICS: August 2012

CLASS 11(PHYSICS)

1.Write the dimensional formula of G.

2. Write the dimension of

a.) R, In the following equation, PV=RT, where symbols have usual meaning.

b)The velocity v of a particle depends on time t according to relation
v =at+b/t+c ,what are the dimensions of a,b and c

3. Check the correctness of following equation,

a)s_nth=u+a/2(2n-1)

b) s=ut+1/2.at²
- EQUATION OF MOTION
4. A car is initially stationary. It has a constant acceleration of 2.0 ms^-2
                           a. Calculate the velocity of the car after 10s.
           b.Calculate the distance travelled by the car at the end of 10s.

     c.Calculate the time taken by the car to reach a velocity of 24ms^-2

^{5.A car is moving at 8m/s . The driver makes it at 1.0m/s for a distance of 18m. What is the final velocity of the car?}

^{6. A train travels at 50m/s when the driver applies the brake and gives the train a constant deceleration of magnitude 0.50m/s}²

^{for 100s. Describe what happens to the train. Calculate the distance travelled by the train in 1min. 40sec.}

^{7. A man walks for 1min. at a speed of 1m/s and then runs 1min. at 3m/s along a straight track. What is the average speed of the man ?}

^{8.The displacement of a particle moving in one dimension under the action of a constant force is related to time t by equation}

^t=√x+3

Where x is in meter and t is in second. Find the displacement of the particle when velocity is zero.

^{THE END}