Which word means an upward force acting on an object in a fluid (gas or liquid)? [7k-13]
Which word means the force of attraction between any two objects? [7k-14]
Which word means the force preventing two materials or objects in contact passing each other? [7k-15]Which word means the force of gravity on an object? [7k-16]
The diagram shows the four forces involved and their direction of 'action' as a person is swimming through water. Which of the four forces corresponds to friction ? [7k-17]The diagram shows the four forces involved and their direction of 'action' as a person is swimming through water. Which of the four forces corresponds to gravity ? [7k-18]The diagram shows the four forces involved and their direction of 'action' as a person is swimming through water. Which of the four forces corresponds to the 'driving' force ? [7k-19]The diagram shows the four forces involved and their direction of 'action' as a person is swimming through water. Which of the four forces corresponds to the upthrust ? [7k-20]
Which of the following is a 'force'? [7k-21]Which of the following is a 'force'? [7k-22]Which of the following is a 'force'? [7k-23]Which of the following is a 'force'? [7k-24]
Calculate the block volume if L = 2 cm, B = 3 cm and H = 4 cm. [7k-25]Calculate the block volume if L = 15 cm, B = 2 cm and H = 4 cm. [7k-26]Calculate the block volume if L = 4 cm, B = 2 cm and H = 7 cm. [7k-27]Calculate the block volume if L = 3 cm, B = 6 cm and H = 2 cm. [7k-28]Which of the following is a 'force'? [7k-29]You are given the following masses and volumes for various blocks of materials. The mass of 1 cm3 of water is 1 g. From them choose which one will sink in water? [7k-30]You are given the following masses and volumes for various blocks of materials. The mass of 1 cm3 of water is 1 g. From them choose which one will float on water? [7k-31]You are given the following masses and volumes for various blocks of materials. The mass of 1 cm3 of water is 1 g. From them choose which one will float on water? [7k-32]You are given the following masses and volumes for various blocks of materials. The mass of 1 cm3 of water is 1 g. From them choose which one will sink in water? [7k-33]You are given the following masses and volumes for various blocks of materials. From them choose which one has a density of 0.5 g/cm3? [7k-34]You are given the following masses and volumes for various blocks of materials. From them choose which one has a density of 1.5 g/cm3? [7k-35]You are given the following masses and volumes for various blocks of materials. From them choose which one has a density of 2 g/cm3? [7k-36]
The diagram on the left summarises the forces acting on a cyclist. The one on the right is trying to catch up! Which corresponds to friction and air resistance? [7k-37]The diagram on the left summarises the forces acting on a cyclist. The one on the right is trying to catch up! Which corresponds to the effect of gravity? [7k-38]The diagram on the left summarises the forces acting on a cyclist. The one on the right is trying to catch up! Which corresponds to the pedalling of the cyclist? [7k-39]The diagram on the left summarises the forces acting on a cyclist. The one on the right is trying to catch up! Which corresponds to the force produced by compression? [7k-40]The diagram on the left summarises the forces acting on a cyclist. The one on the right is trying to catch up! Which must be TRUE to get constant speed? [7k-41]The diagram on the left summarises the forces acting on a cyclist. The one on the right is trying to catch up! Which must be TRUE to get the speed reduced? [7k-42]The diagram on the left summarises the forces acting on a cyclist. The one on the right is trying to catch up! Which must be TRUE to get a 'speeding up'? [7k-43]The diagram on the left summarises the forces acting on a cyclist. The one on the right is trying to catch up! Which must be TRUE when the brakes are applied effectively? [7k-44]| Weight added to spring (N) | 2 | 4 | 6 | 8 | 10 |
| Length of spring (cm) | 23 | 27 | 31 | 35 | 39 |
From the data, what is the spring extension per N weight added? [7k-45]