When a bat hits a ball, the impulse is
a) the force multiplied by the time the objects are in contact.
b) the change in velocity multiplied by the force.
c) the mass multiplied by the force.
d) the mass multiplied by the acceleration.

Determine the change in width a, height b, thickness t when a plate is subjected to the uniform distributed load and is made of material having modulus of elasticity e=230 gpa and poisson's ratio ν=1/3. given : a=400 mm and b= 300 mm also the uniformly distributed load in downward y direction of plate is 2 mn/m and in the positive x direction is 3 mn/m and t=20 mm