Apunter drops a 2.0 kg ball from rest vertically 1 meter down onto his foot. the ball leaves the foot with a speed of 18 m/s at an angle 55º above the horizontal. what is the impulse delivered by the foot (magnitude and direction)? ans: 43.6 kg*m/s @ 61.7° above the horizontal

Explanation:

Given

mass of drop

height of fall

ball leaves the foot with a speed of 18 m/s at an angle of

Velocity of ball just before the collision with the floor

Impulse delivered in Y direction

Impulse in x direction

at an angle of

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force