Question
2. A traih 19.is 3. In the year 456 N.V., you determine the planet's gravitational acceleration, you toss a ball up into the air with an initial speed of 11.7 m/s and time how long it takes to get back to you. You calculate a g of 3.9 m/s You will find this problem fairly simple if you analyze it with a diagram/cartoon as was done in class. I've left you space for this to the right of part a. a. Fill in the following table, showing the velocity of the ball after the given number of seconds. are an astronaut learning about a newly discovered planet. In order to Remember that velocity is a vector and uses signs. Remember also that the moment you let go of the ball is zero seconds Time Velocity 1s 2s 3s 4s 5s What is the value of g when the ball reaches the ground? a. What was the bals What was the balls velocity at the very top of its trip? b. c. velocity when it passed you again?
Explanation / Answer
v= u- at ---we will use this eqaution to determine velocity at different instants:
a) time velocity'
1 11.7- 1(3.9) =,7.8 m/s
2 11.7- 2(3.9) = 3.9
3 11.7- 3(3.9) = 0m/s ( max height)
4 11.7- 4(3.9) = -3.9 m/s ( affling back)
5 11.7- 5(3.9) = -7.8 m/s
Ball 's velocity on passing you = 11.7 m/s
value of g on raeching ground= 3.9 m/s^2
bal's velocity at top = 0 m/s
