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Physics forces problem help?

A force is defined as F = (8i - 4tj) N, where t is time in seconds. This force is applied to a stationary object of mass 2 kg.

A. At what time will the object have a speed of 15 m/s?
B. What is its displacement (in i, j form) at that time?
C. At that time, how far is that object from its original position?

Thanks in advance!
Original post by vfransia
A force is defined as F = (8i - 4tj) N, where t is time in seconds. This force is applied to a stationary object of mass 2 kg.

A. At what time will the object have a speed of 15 m/s?
B. What is its displacement (in i, j form) at that time?
C. At that time, how far is that object from its original position?

Thanks in advance!



Welcome to TSR physics.

How far have you got with this yourself, and what is it you don't understand?
Do you know the relationship between force, acceleration, velocity and displacement?
Original post by vfransia
A force is defined as F = (8i - 4tj) N, where t is time in seconds. This force is applied to a stationary object of mass 2 kg.

A. At what time will the object have a speed of 15 m/s?
B. What is its displacement (in i, j form) at that time?
C. At that time, how far is that object from its original position?

Thanks in advance!


Post the answers and I'll show you the methods.(that means i did it:cool:)

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