Suppose a tennis canon located at ground level fires a ball at a 45 angle to the ground with a speed of 80 feet per second. In calculating the trajectory of the ball you may exclude the effect of air resistance and assume the only force acting on the ball is gravity which accelerates the ball downward at a rate of 32 feet per second.
How high is the ball at its highest point?

a) 20 feet b) 20/2 feet
c) 32 feet d) 50 feet
e) 50/2 feet f) 64 feet
g) 6472 feet
h) 100 feet

If an object with an initial temperature of 300 k increases its temperature by 1°c every minute, by how many degrees fahrenheit will its temperature have increased in 10 minutes? (a) 6°f (b) 10°f (c) 18°f (d) 30°f

Arock collection comes from which part of earth?

Which lists the main components of darwin’s theory of evolution? a. random mutations drive evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms do not change. b. natural selection drives evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms change over time. c. natural selection drives evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms change over time. d. random mutations drive evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms do not change.