Resultant Forces (GCSE Physics)

A book rests on a table with gravitational force 12 N downward. A student pushes down on the book adding another 3 N downward. The table reacts with normal force. What is the normal force?

A horizontal towbar pulls a disabled car with 1200 N forward. The road applies 1200 N backward. If the towbar force suddenly drops to 900 N, what is the resultant and direction?

Two equal forces of 15 N act symmetrically at 30° either side of the vertical. What is the resultant and its direction?

A cyclist applies a forward force of 200 N. Air resistance and friction total 200 N backward. What is the cyclist’s acceleration?

Two people push a table from opposite sides with equal magnitude forces so it doesn’t move. If one person increases their push, what happens to the resultant force?

Two forces act at right angles: 9 N north and 12 N east. Which of these is the magnitude of the resultant?

A 50 N pull at 45° above the horizontal has vertical component = 35.4 N (approx). Which expression gives the horizontal component?

A skateboarder is moving right. He collides and the resultant horizontal force becomes 120 N left for 0.5 s. What is the change in momentum?

A box on a table has weight 150 N downward and the table exerts a normal contact force of 150 N upward. What is the resultant vertical force on the box?

A block on a slope experiences gravity component 40 N down the slope and friction 25 N up the slope. What is the resultant along the slope and will the block accelerate up or down?

Two forces of 5 N and 12 N act along the same line in the same direction. What is their resultant?