A 60 kg astronaut hovering in an orbiting space station throws a 1.0 kg water bottle (that he is holding) across the room at a speed of 8.0 m/s. What is the magnitude and direction
of the astronaut's velocity after he throws it?

According to newtons universal law of gravitation, which would change the parh of the ball so it traces out widest curved path possible?

Polly is pushing a box across the floor with a force of 30 n. the force of gravity is –8 n, and the normal force is 8 n. which value could describe the force of friction if polly could not move the box?

(a) calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) imagine adding electrons to the pin until the negative charge has the very large value 1.00 mc. how many electrons are added for every 109 electrons already present