Oxford AQA IGCSE · Combined Science (9204)
5 multiple-choice questions marked as you go, and 5 written questions with worked solutions. All on Forces and their effects.
A student hangs a mass on a spring and measures the extension. If the spring constant of the spring is \(25\text{ N/m}\) and a force of \(5.0\text{ N}\) is applied, what is the extension of the spring, assuming the limit of proportionality is not exceeded?
A spring has a natural length of \(15.0\text{ cm}\). When a force of \(6.0\text{ N}\) is applied, the length of the spring becomes \(18.0\text{ cm}\). Calculate the force required to stretch the spring to a total length of \(21.5\text{ cm}\), assuming the limit of proportionality is not exceeded.
Use the velocity-time graph below to calculate the total distance travelled by the object over the \(19\text{-second}\) period shown.
A spring has a spring constant \(k\) of \(50\text{ N/m}\). What is the force required to produce an extension of \(0.1\text{ m}\), assuming the limit of proportionality is not exceeded?
An astronaut has a mass of \(70\text{ kg}\). The gravitational field strength on the Moon is approximately \(1.6\text{ N/kg}\). Calculate the weight of the astronaut on the Moon.
State whether velocity and time are scalar or vector quantities.
Write your answer out first, then check it against the worked solution.
A courier drives a delivery van \(12\text{ km}\) North along a straight road, then realizes they missed a stop and drives \(15\text{ km}\) South along the same road. Calculate the total distance traveled and the magnitude of the final displacement from the starting point.
Write your answer out first, then check it against the worked solution.
A box of mass \(15\text{ kg}\) is pushed across a horizontal floor with a constant force of \(60\text{ N}\). If the box accelerates at a rate of \(2.4\text{ m/s}^2\), calculate the magnitude of the frictional force acting against the motion.
Write your answer out first, then check it against the worked solution.
A student uses a spring to investigate the relationship between force and extension. The spring has an original length of 15.0 cm.
(a) The student hangs a weight of 4.0 N on the spring. The new length of the spring becomes 19.0 cm. Calculate the extension of the spring.
(b) Calculate the spring constant \(k\) of this spring using the formula \(F = k \times e\). Give your answer in N/cm.
(c) Weight is a force acting on an object due to gravity. State the equation used to calculate the weight of an object if its mass and the gravitational field strength are known.
Write your answer out first, then check it against the worked solution.
A wooden crate with a mass of \(25\text{ kg}\) is being pushed across a horizontal floor. The person pushing the crate exerts a forward force of \(85\text{ N}\). There is a constant frictional force of \(20\text{ N}\) acting against the motion.
(a) Determine the resultant force acting on the crate.
(b) Calculate the acceleration of the crate.
Write your answer out first, then check it against the worked solution.
* The content provided by thinka is generated by AI and may not always be accurate or up-to-date. Please use it as a supplementary resource and verify with official materials.
This page can show you how a good answer looks. It cannot tell you what your answer was missing. thinka marks your written work against the real mark scheme in about 15 seconds.
Want more questions like these? Get a fresh set on this topic, marked as you go.
Practise More