If i threw a ball vertically at an initial speed of 34m/sec how many seconds would it take to reach it's maximum height?

Apossible explanation for a set of facts that can be tested by further investigation is called

According to newton's second law, when the same force is applied to two objects of different masses, a the object with greater mass will experience a great acceleration, and the object with less mass will experience an even greater acceleration, b. the object with greater mass will experience a smaller acceleration, and the object with less mass will experience a greater acceleration, c. the object with greater mass will experience a greater acceleration, and the object with less mass will experience a smaller acceleration, d. the object with greater mass will experience a small acceleration, and the object with less mass will experience an even smaller acceleration.

Crowbar of 5 metre is used to lift an object of 800 metre if the effort arm is 200cm calculate the force applied