Aphysics student stands on a cliff overlooking a lake and decides to throw a tennis ball to her friends in the water below. she throws the tennis ball with a velocity of 25.5 m/s at an angle of 33.5∘ above the horizontal. when the tennis ball leaves her hand, it is 18.5 m above the water. how far does the tennis ball travel horizontally before it hits the water? neglect any effects of air resistance when calculating the answer.

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.

Acricket ball of 70g moving with a velocity of 0.5 m/s is stopped by a player in 0.5s what is the force applied to stop the ball

Name the non metal condut electricity