Answer:The formula for kinetic energy is
(1/2) M V^2.
With M in kg and V in m/s, the answer will be in Joules.
K.E = 40joule
Explanation:
Displacement = velocity * time
Just substitute the value, & solve the equation.
Hope this helps!
The normal force decreases, this is the frictional force. It will be counteracted by the force which accelerates the brick to slide downward opposite to the end where the board is raised. As the angle increases the force acting upon the brick opposite to the normal force will decrease.
