1. during a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. if the trebuchet launches the stones with a velocity of +40.0 m/s at an angle of 55.0°, how long does it take the stone to hit the ground? what is the maximum distance that the trebuchet can be from the castle wall to be in range? how high will the stones go? show all your work.

An insurance company wants to know if the average speed at which men drive cars is higher than that of women drivers. the company took a random sample of 27 cars driven by men on a highway and found the mean speed to be 72 miles per hour with a standard deviation of 2.2 miles per hour. another sample of 18 cars driven by women on the same highway gave a mean speed of 68 miles per hour with a standard deviation of 2.5 miles per hour. assume that the speeds at which all men and all women drive cars on this highway are both approximately normally distributed with unknown and unequal population standard deviations.

The long handle on a rake is a(n) a. lever b. screw c. wedge d. inclined plane

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical