Scalars, vectors and resolution of forces

Question 1 of 10

A vector quantity has

A. both magnitude and direction B. magnitude only C. direction only D. no units

Question 2 of 10

A force of 50 N acts at 60° to the horizontal. Find its vertical component, to 1 decimal place.

A. 25 N B. 43.3 N C. 86.6 N D. 26 N

Question 3 of 10

The vertical component of a force F at angle θ to the horizontal is

A. F cos θ B. F tan θ C. F sin θ D. F

Question 4 of 10

The equilibrant of a set of forces is

A. equal to the resultant in the same direction B. always zero C. the largest force D. equal in size and opposite in direction to the resultant

Question 5 of 10

A force of 50 N at 60° to the horizontal has a horizontal component of ___ N.

Question 6 of 10

The resultant of two forces of 3 N and 4 N acting at right angles is

A. 7 N B. 1 N C. 5 N D. 12 N

Question 7 of 10

A force of 60 N acts at 45° to the horizontal. Find its horizontal component, to 1 decimal place.

A. 60 N B. 43.4 N C. 42.4 N D. 41.4 N

Question 8 of 10

A force of 20 N at 60° to the horizontal has a horizontal component of ___ N.

Question 9 of 10

Three forces in equilibrium can be represented by

A. the sides of a closed triangle taken in order B. a straight line C. a circle D. parallel lines only

Question 10 of 10

The maximum resultant of forces 6 N and 8 N is

A. 10 N B. 2 N C. 48 N D. 14 N

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New set of questions

Questions written by OtisamLMS in the style of the WASSCE. They are not WAEC past questions.

Past questions, worked solutions and curriculum-mapped study material for JHS and SHS students and teachers in Ghana.

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