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The unbalanced horizontal net force on a truck of mass 1500 kg moving along a straight...

The unbalanced horizontal net force on a truck of mass 1500 kg moving along a straight horizontal line at a uniform speed of 25 m/s is:

Find the force:

Please show work

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Answer #1

since truck is moving with uniform speed

speed is not changing

hence acceleration on truck is zero

there fore

Force on truck

F = 1500* 0

F = zero N

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Answer #2

The net force is ZERO because

1- The SPEED is CONSTANT.

2- The direction is not changing .(Straight line motion.)

1&2 => Constant Velocity =>Zero Acceleration.=>ZERO FORCE

NOTE: IT MAY BE POSSIBLE THAT THE SPEED IS CONSTANT BUT ACCELERATE (by changing direction).

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