1. Define following with one example of each from your life.
a) Elasticity and Deformation
b) Linear momentum and angular momentum
c) Torque and Force
d) Vector and Scalar

2. A horizontal spring is oscillating and has mass of 200 g. If the spring constant of it is 80 N/m,
(a) find out its time period,

 (b) if spring constant changed to 20 N/m, what will be its time period?
3. Alissa dropped a ball from a height of 2000 mm. Find out

 (a) how long it will take to hit theground and (b) what would be its velocity when it hits the ground?

 (c) If mass of the ball is 500 g, what would be its kinetic energy when it hits the ground?

 (d) What would be its potential energy before its fall?

4. Lilja is driving a car with velocity of 1800 cm/s to East and then stops her car in 2 s to see Zeba. Find out

 (a) how much acceleration the car will have and

 (b) how far she will travel before she comes to stop.

Answer rating: 100% (QA)

1 Definitions with Examples a Elasticity The ability of a material to return to its original shape and size after being deformed by an external force ... View the full answer