4. John drives his car 5 miles north to visit his friend, and then drives 7 miles east to go to the store, What is John's displacement? * 1

John's displacement is 8.6 miles.

Explanation:

We need to fin the magnitude of the sum of the partial displacement. So we will have:

I hope it helps you!

here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be

current flows in a wire