An object travels 7.5 m/s toward the West and under the influence of a constant net force of 5.2 kN, 4.3 s later, it is travelling 2.5 m/s toward the East. What is its mass?

A. 2200 kg
B. 4500 kg
C. 6000 kg
D. 12000 kg


A. 2200 kg

Physics & Space Science

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What will be an ideal response?

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a. True b. False Indicate whether the statement is true or false

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A) slow down. B) remain at speed c. C) speed up. D) none of the above

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In a relay race, runner A is carrying the baton and has a speed of 3.00 m/s. When he is 25.0 m behind the starting line, runner B starts from rest and accelerates at 0.100 m/s2

How long afterwards will A catch up with B to pass the baton to B? A) 5.17 s B) 10.0 s C) 11.9 s D) 20.4 s E) A never catches up.

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