A constant force of magnitude F acts on an ..

Question 1 Report

A constant force of magnitude F acts on an object of mass 0.04kg initially at rest at a point O. if the speed of the object when it has moved 50m from O is 500ms-1, what is the value of F?

0.4N

100.0N

250.0N

1000.0N

Answer Details

F = ma and V2 = U2 + 2aX

F = m $\frac{(V^{2} - U^{2})}{2 X}$

= 0.04 $\frac{(500^{2} - 0^{2})}{2 \times 50}$

F = 100N

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A constant force of magnitude F acts on an object of mass 0.04kg initially at rest at a point O. if the speed of the object when it has moved 50m from O is ...