Calendar. MasteringPhysics: Reading C Cheng study Quiz 3: Ch. 3 Google Chrome Se

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Calendar. MasteringPhysics: Reading C Cheng study Quiz 3: Ch. 3 Google Chrome Secure https://session.masteringphysics.com/myctlitemview?offset next&assignmentProblemlD; 74743907 ysics 105 Spring 2017 LeClair signed in as kai cao ading Quiz 3 Ch 3 Prelecture Concept Question 3.05 previous 2 of 3 Prelecture Concept Question 3.05 Part A Suppose that you toss a rock upward so that it rises and then falls back to the earth. If the acoeleration due to gravity is 9.8 m/sec what is the rocks acceleration a the instant that it reaches the top of its trajectory (where its velocity is momentarily zero)? Assume that air resistance is negigible, The rock has a downward acceleration of 9.8 ms2 The acceleration of the rock is zero. The rock has a downward acceleration of 19.6 ms? The rock has an upward acceleration of 9.8 m/s2. The rock has an upward acceleration of 19.6 m/s My Answers Give Up Submit Provide Feedback Continu

Explanation / Answer

a.The rock has a downward acceleration 9.8ms-2

When the body reaches to maximum height the velocity at the heighest point the velocity becomes zero but acceleration due to gravity acts downwards

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