l Homework, Google Chrome 44599696 PHYS1301 Spring 2015 Mon, Wed 5.30-7pm chapte

Question

l Homework, Google Chrome 44599696 PHYS1301 Spring 2015 Mon, Wed 5.30-7pm chapter 4 Homework Problem 4.25 Problem 4.25 Part A IPA ball rolls off a table and falls 0.70m to the What is the magnitude of the acceleration of the ball just before it strikes the gound? floor, landing with a speed of 4.4m/s Express your answer using two significant figures. m/s? Submit My Answers Glve Up Part B What was the initial speed of the ball? Express your answer using two significant figures. m/s Submit My Answers previous 13 of 10

Explanation / Answer

a)

here acceleration is same for all points

a = 9.8 m/s^2

b) u = ?

h = 0.7 m

v = 4.4 m/s

Using thrid equation of motion .

v^2 - u^2 = 2ah

4.4^2 - u^2 = 2*9.8*.7

u = 2.37 m/s

initial speed of ball was 2.37 m/s

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