The product of 11.6 and 7.7 is
A block of mass 1.2 kg moving at a speed of 20 cm/s collides head-on with a similar block kept at rest. The coefficient of restitution is 35. Find the loss of kinetic energy during the collision.
Use the product (a + b)(a - b) = a2−b2 to evaluate :
(i) 21×19
(ii) 33×27
(iii) 103×97
(iv) 9.8×10.2
(v) 7.7×8.3
(vi) 4.6×5.4
Question 2 (d)
Find the value of: 11.6 – 9.847