Please Help! Which of the following statements is correct for an object released
ID: 2134624 • Letter: P
Question
Please Help! Which of the following statements is correct for an object released from rest, freefalling in
the Earth's gravity? (Neglect air resistance.) Circle all true statements. If the statement is incorrect
rewrite the statement, in the space below the incorrect statement, to make it correct.
a. during each second the object travels 4.9 m b. the average speed at time t = 4s is 39.2 m/s c. the instantaneous speed at time t = 3s is 29.4 m/s d. the average acceleration at time t = 1s is 9.8 m/s2e. the average acceleration at time t = 3s is 29.4 m/s
Explanation / Answer
a. Incorrect: a. during each second the object travels 4.9 m
Correct: a. during first second the object travels 4.9 m
b. Incorrect: the average speed at time t = 4s is 39.2 m/s
Correct: the instantaneous speed at time t = 4s is 39.2 m/s
c. the instantaneous speed at time t = 3s is 29.4 m/s
It is correct
d. the average acceleration at time t = 1s is 9.8 m/s2 (correct if we ignore the grammer)
correct: the average acceleration in time t = 0s to t = 1s is 9.8 m/s2
e. Incorrect: the average acceleration at time t = 3s is 29.4 m/s
Correct: the average acceleration in time t = 0s to t = 1s is 9.8 m/s2