What situation below best describes a situation where the sum of forces acting on an object...

What situation below best describes a situation where the sum of forces acting on an object add up to be zero?

The object has a constant speed.

The object is moving in a circle but not speeding up or slowing down.

The object is moving in a straight line without speeding up or slowing down.

The object is moving in a straight line and speeding up.

The object is moving in a straight line and slowing down.

make sure 100% please

Solutions

Expert Solution

Ans

Option The object is moving in a straight line without speeding up or slowing down is correct.

Explanation

The object has a constant speed. In Circular motion object has constant speed but centripetal force acts on object.

Therefore this option is not correct.

The object is moving in a circle but not speeding up or slowing down. In a circular motion centripetal force acts on object.

Therefore this option is not correct.

The object is moving in a straight line without speeding up or slowing down. In staright line direction of motion does not change and as given speed is constant. Therfore velocity of object is constant and accleration of object which is equal to rate of change of velocity is zero. Thus net force on object is zero.

Therefore this option is correct.

In option (4) and (5) speed of object changes so velocity of object changes and corresponding acceleration of object will be there. Thus net force on object is not zero.

Therefore option (4) and (5) are not correct.

Cheers

genius_generous answered 1 year ago

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