A man foolishly tries to fish a burning piece of bread from a toaster with a metal butter knife and comes into contact with 125-V ac. He does not even feel it since, luckily, he is wearing rubber-soled shoes. What is the minimum resistance of the path the current follows through the person?

t = 0.75 seconds

Explanation:

Given that,

The initial speed of a ball, u = 7.5 m/s

We need to find the time taken by the ball to reach the maximum height. Let t is the time taken.

At maximum height, its final speed, v = 0 and it will move under the action of gravity.

Using the equation of motion to find t.

Use a = -g

Hence, the ball will take 0.75 seconds to reach the maximum height.