Question

2. In your practice exam, we reviewed the following problem: "Adam slides on ice down a 60 degree slope that ends in a cliff. His resultant velocity is 10 m/s when he reaches the cliff. Does he crash into the rocks or does he survive?" Prof. Arellano showed the steps of how you would solve this problem using projectile motion. You must show your work to receive partial or full credit. Just answering "yes" or "no" gets zero points. a. Using physics, first show that Adam will crash into the spikey rocks. 2.(4.1 b. Given that Adam will crash into spikey rocks, determine and show which key parameter you can change to make sure that Adam safely passes the spikey rocks Note: We expect to see calculations that clearly show the value of the parameter that you have chosen to change so that Adam can pass the 5-meter mark in the horizontal direction. Guessing will get you zero points

answer both parts please

Answer 1

1omis 460-> 2 10 20$ bo mis Smiş y = 10 Sintomis - Shmiş also, ay = 8:9-3 mis? from aq. & motion, 10 = 518+ + 1 (3.8) 42 4.94² +8.661 - 1020 #2 -8,66 + |1866)2+4610)(4.9) 2x4.9 -8.66 I 16.46 son Conto g. 8 taking the valus t = 7.80 sec = 0.796 dec. In this time Horizontal distance cover is a. navut = 5x 0.7968n = 3.98 m So he will crash in spikey rocks.

b) to cross the rocks we have to increase the time of flight. t = -Vy + Suh + 4hol, = S vy?t 2gh - Vy So we have to increase, Vy a vsinto lie we have to increase velocity.