If an object is dropped from height h = 8 m, then what is the velocity just before impact?

What causes an increase in momentum

Is space-time and concept of "now" an illusion?

When two strands of dna line up adenine pairs up with

Telescopes work by using optics which means light true or false I don't know what category to put this in so forgive me if it's not the right one

Heather and Jerry are standing on a bridge 51 m above a river. Heather throws a rock straight down with a speed of 17 m/s. Jerry, at exactly the same instant of time, throws a rock straight up with the same speed. Ignore air resistance.

Why am i not floating?

A person holds onto an object for 2 minutes, but doesn't move the object. Is work done on the object?

Warming in front of a fire while camping is an example of? A. Conduction B. Convection C. Radiation

In which medium would light travel the fastest? Question 21 options: a. across a room b. in a swimming pool c. through outer space d. through a railroad track

A 0.60 Kilo gram basketball poses on the rim of a basketball hoop that is 3.0 m high find the potential energy of the ball there (use G=10 N/KG.)