Daily 130 HW Problems

Assignment 8/30 (Due Friday 9/1):

Please answer the following question and the 2 Physlet questions :

Question#1

Consider an object undergoing projectile motion, as in the two animations below. What can you say about:

direction of the velocity

and the direction of the acceleration

of the object at any point in time?

Question#2

A red ball is launched from a gun as shown in the animation (position is in meters and time is in seconds). Ignore air friction. If the launch angle is 30^o, without calculation, is there another launch angle that will allow the ball to land in exactly the same place? If so, what is it? Start Animation

Question#3

A red ball is launched from a gun as shown in the animation (position is in meters and time is in seconds). Ignore air friction. If the launch angle is 30^o, without calculation, is there another launch angle that will allow the ball to land in exactly the same place? If so, what is it? Start Animation

Answer in the form below, a short answer for each is fine.
This report is due by 8:00 am Friday morning.