2/1 t2 mt

What could the effect of a resultant force be?

• Cause a change in state of rest or motion

• Resultant forces do not have any effect on anything

• Resultant forces only affect waves

• Resultant forces do not exist

What is the resultant force of the two forces shown below?

• 10 N (to the right)

• 130 N (to the right)

• 10 N (to the left)

• 130 N (to the left)

Sarah pulls on one end of a rope with a force of 100 N, and her friend Jane pulls on the other end with a force of 100 N. What happens to the rope and why?

• It doesn't move at all because the resultant force is zero.

• It moves toward Sarah because the resultant force is 100 N.

• It moves toward Jane because the resultant force is 200 N.

• It doesn't move at all because the resultant force is 200 N.

What is a resultant force?

• A single force which has the same effect on motion as a number of forces acting at a point

• When no forces are acting on a variety of points

• A single force which has the same effect on motion as a number of forces acting at a number of different points.

• 49 forces acting on 79 points

If an object is stationary and the resultant force acting upon it is zero, what will happen to the object?

• It will accelerate at 1 m/s²

• It will accelerate at 2 m/s²

• It will accelerate at 3 m/s²

• It will accelerate at 0 m/s²

If an object is stationary and the resultant force acting upon it is non-zero, what will happen to the object?

• It will remain stationary

• It will move towards the direction of the resultant force

• It will move in the direction of the resultant force

• It will explode

The driving force exerted by a motorbike is 2000 N. The resultant force acting in a forward direction is 200 N. What is the size of the opposing force (air resistance and friction)?

• 1800 N

• 200 N

• 1900 N

• 2000 N

A car is travelling on a level road with a constant velocity. Two forces, F1(on the left) and F2 (on the right) then act on the car.

If the car moves with a decreasing velocity, what is the relationship between the magnitude of F1 and F2?

• For the car to continue to move with the same constant velocity, the resultant force acting on the car must be equal to zero.

• For the car to move with a decreasing velocity, there must be a resultant force acting in the opposite direction to the velocity.

• For the car to move with an increasing velocity, there must be a resultant force acting in the same direction as the velocity.

• For the car to move with increasing and decreasing velocity, there must be a resultant force acting on the car must be equal to zero.

Two forces act on a small ball. One force exerts a force of 10 N east, whilst the other force exerts a force of 15 N west. What is the size and direction of the resultant force?

• 5 N east

• 5 N west

• 10 N east

• 10 N west

What is Newton's Second Law of Motion?

• Force is equal to mass times acceleration

• A body in motion tends to stay in motion, a body at rest tends to stay at rest

• for every action there is an equal and opposite reaction

• E=mc²