Motion Forces And Energy All subtopics
A student uses the displacement method to determine the volume of a small stone. The initial water level in the measuring cylinder is 34.0 cm³ and the final water level is 41.5 cm³. What is the volume of the stone?
A student reads the volume of water in a measuring cylinder by looking downward at an angle from above. Which statement correctly describes the effect on the reading?
A student uses a stopwatch to time a ball falling through a distance that takes approximately 0.5 s. State one reason why this measurement has a large percentage uncertainty.
A student measures the time for 25 complete oscillations of a pendulum as 30.0 s. Calculate the period of one oscillation.
Explain why a fiducial marker is placed at the equilibrium (centre) position of a pendulum rather than at the extreme of its swing. Which statement gives the correct reason?
A student measures the thickness of 80 identical sheets of card as 24.0 mm using a ruler. Calculate the thickness of one sheet of card.
Which row correctly classifies all three quantities?
A car travels at a constant speed of 20 m s⁻¹ around a circular roundabout. Which statement about the car’s motion is correct?
A helicopter exerts a vertical lift force of 12 000 N upward while a horizontal wind pushes it with a force of 5 000 N to the east. Calculate the magnitude of the resultant force on the helicopter.
Two forces act on a particle at right angles: F₁ = 7.0 N east and F₂ = 24.0 N north. Determine the direction of the resultant force, measured as an angle from the eastward direction.
A swimmer crosses a river heading due north at 1.2 m s⁻¹ relative to the water. The river current flows due east at 0.9 m s⁻¹. What is the magnitude of the swimmer’s resultant velocity?
An engineer needs to determine the volume of a small, irregularly shaped metal component that sinks in water. The component is too small to measure with a ruler. Which method is most appropriate?
Which pair of quantities consists of one scalar and one vector?
A student wants to find an accurate value for the period of a pendulum. She times 20 oscillations three times, obtaining 16.2 s, 16.6 s, and 16.4 s. What is the best estimate for the period of one oscillation?
A force of 10.0 N acts due north on an object, and simultaneously a force of 10.0 N acts due east. Which value is closest to the magnitude of the resultant force?
During an experiment, a student notices that the pendulum bob appears to pass the fiducial marker at slightly different positions each swing. State one improvement the student could make to reduce this inconsistency.
Which statement is the correct definition of speed?
A car travels 9000 m in 5.0 minutes. What is the speed of the car?
A ball is thrown at 5.0 m s⁻¹ to the east. It bounces off a wall and returns at 5.0 m s⁻¹ to the west. Which statement about the ball’s speed and velocity is correct?
A runner completes the first 100 m of a race in 10 s and the next 100 m in 15 s. What is the average speed for the whole race?