A 50 kilogram student threw a 0. 40 kilogram ball with a speed of 20 meters per second. If the ball started at rest, what was the magnitude of the impulse that the student exerted on the ball? [neglect air resistance].

Afarmer began a new method of reducing grain spills. this reduced the number of mice on the farm. the number of snakes in the surrounding area decreased at the same time. the snakes depended on the mice that lived in the field. what’s the likely reason the snake population decreased? a. the number of snake predators increased. b. the number of mice increased. c. the number of mice decreased. d. the pesticides affected the snakes. e. a new breed of mice moved into the field.

Earth takes in thermal energy from the sun in a process called . sunlight strikes earth’s surface at different angles. this angle is called the angle of . btw its

The different layers of gases that extend form the surface of the earth into space