The total force is called the
force. (Choose from: multiplied, added, difference, resultant, balanced, unbalanced)
Important Questions on Forces and Their Effects
If the total force is zero, all the forces are _____. (Choose from: multiplied, added, difference, resultant, balanced, unbalanced)
Look at the diagrams. Which diagram show balanced forces. Choose the two best answers.
Look at the diagram. Choose the best description of the total forces. (Lines with arrows indicate the forces and their directions)
There are four forces acting on a cube shaped box.
4 N to the right
3 N to the upward
2 N to the left
3 N to the downward
Complete this diagram of the forces.
There are four forces acting on a cube shaped box.
to the right
to the upward
to the left
to the downward
Calculate the resultant force.
A skydiver jumps out of an aircraft and falls vertically downwards.
Sort the sentences into the correct order. Write a number against each sentence. The first one has been done for you.
- The skydiver accelerates. The skydiver goes faster
- The skydiver's parachute opens
- The faster the skydiver falls, the higher the air resistance
- The skydiver slows down before reaching the ground
- Eventually the force due to air resistance matches the weight of the skydiver
- The parachute increases air resistance
When this happens, the acceleration is zero and the skydiver falls at a speed called terminal speed (velocity)
Mia holds a golf ball and a larger fluffy ball at head height. She then lets go of both balls, and they fall to the ground. The balls will accelerate (get faster) until they reach the ground. Explain what causes this to happen.
Mia holds a golf ball and a larger fluffy ball at head height. She then lets go of both balls, and they fall to the ground. The balls will accelerate (get faster) until they reach the ground. Mia observes the differences between how the golf ball and fluffy ball fall.
Predict what you would expect to observe. Include a description of how the results should differ for the both balls.
