1.4.1 Resultant Forces

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 do we call the forwards force produced by an aeroplane's engine or propeller?

• thrust
• friction
• weight
• gravity

What is the force that pulls us towards the Earth?

• gravity
• weight
• friction
• mass

What is 'drag' another name for?

• dressing up
• air resistance
• friction
• weight

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

• big
• total
• resultant
• sum

Is the car

• Stationary
• Moving at constant speed
• Accelerating
• Decelerating

Is the car

• Stationary
• Moving at constant speed
• Accelerating
• Decelerating

In a tug of war the left team pulls with a force of 200N. The right team pulls with a force of 150N.What is the resultant force?

• 50N to the left.
• 350N to the left.
• 350N to the right.
• 50N to the right.

What is the resultant force?

• 40 N, Left

• 0 N, Balanced

• 400 N, Right

• 40 N, Right

What is the resultant force?

• 400 N, Up

• 400 N, Down

• 800 N, Up

• 800 N, Down