Resultant Forces along the same line

A car moves along a level road.

The diagram shows all of the horizontal forces acting on the car.

Which statement is correct?

• The car is slowing down.

• The car is speeding up.

• The car is moving at a constant speed.

• The car is moving backwards.

The diagram shows a tug-of-war between team X and team Y. The arrows show the forces exerted by the teams on the rope.

What is the size of the resultant force on the rope and in which direction does the resultant force act?

• size of resultant force = 75 N; direction of resultant force = to the left

• size of resultant force = 75 N; direction of resultant force = to the right.

• size of resultant force = 725 N; direction of resultant force = to the left

• size of resultant force = 725 N; direction of resultant force = to the right.

What are balanced forces?

• forces of the same size, in opposite directions
• the same size in the same direction
• forces in opposite directions
• forces at right angles to each other

What is the name for a single force on an object with the same effect as all the forces combined?

• big
• total
• resultant
• sum

Two forces on an object are in the same direction. How do we calculate the resultant force?

• take away one from the other
• multiply them
• divide one by the other
• add them together

Two forces on an object are in opposite directions. How do we calculate the resultant force?

• divide one by the other
• multiply them
• find the difference between them
• add them together

Is the car

• Stationary
• Moving at constant speed
• Accelerating
• Decelerating

Is the car

• Stationary
• Moving at constant speed
• Accelerating
• Decelerating

Is the car

• Stationary
• Moving at constant speed
• Accelerating
• Decelerating

Is the car

• Stationary
• Moving at constant speed
• Accelerating
• Decelerating