Question

A certain force exerted 1.2 sec raises a speed of an object 1.8 m/sec to 4.2m/sec later the same force is applied for 2 sec. How much does the speed change in sec

Answer 1

Answer:after continued 2 seconds journey speed of object is 8.2m/s

Explanation:

See the image for solution

Answer 2

Answer:

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