Please answer ASAP!! Q1)The force of gravity between 2 objects A and B is 100 N. When the mass
of B is doubled and the distance between them is quadrupled. What is
the new force?
Q2)A ball is thrown 60 m vertically into the air.
a) What was its initial velocity?
b) How much time does it take to reach the highest point?

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 uniform slender bar rests on a smooth horizon- tal surface when a force f is applied normal to the bar at point a. point a is observed to have an initial acceleration aa of 20 m/s2, and the bar has a corre- sponding angular acceleration of 18 rad /s2. deter- mine the distance b.

What was the first instrument to ever record an earthquake?