Forces And Motion All subtopics
A runner completes one full lap of a 400 m circular track, finishing at the same point where she started. The run takes 80 s. Which statement correctly describes her distance and displacement at the end of the lap?
A car travels 5.4 km in 3.0 minutes. What is the average speed of the car?
On a distance–time graph, an object's line curves upward, becoming progressively steeper over time. Which description of the object's motion is correct?
A sprinter accelerates from rest to 12 m/s in 4.0 s. What is her acceleration?
A velocity–time graph shows a straight horizontal line at 15 m/s from t = 0 s to t = 20 s. What is the total distance travelled?
Which row correctly classifies speed, velocity, and acceleration?
A train travelling at 72 km/h brakes and comes to rest over a distance of 80 m. Using v² = u² + 2as, calculate the deceleration.
An object accelerates uniformly from 6.0 m/s to 18 m/s over 4.0 s. A velocity–time graph is drawn for this motion. What is the total distance travelled, calculated from the area under the graph?
A student investigates the motion of a toy car on a flat surface using a stopwatch. Three time readings for the car to travel 1.50 m are: 2.0 s, 2.4 s, and 2.2 s. Which value is closest to the average speed calculated using the mean time?
A bus driver notices a hazard while travelling at 20 m/s and brakes, decelerating at 4.0 m/s². Using v² = u² + 2as, what is the braking distance?
Which of the following correctly converts 108 km/h to m/s?
On a velocity–time graph, a straight line slopes downward from 24 m/s to 0 m/s over 8.0 s. What is the acceleration of the object?
A stone is dropped from rest off the edge of a cliff and falls 20 m. Taking g = 9.8 m/s², what is the speed of the stone just before it hits the ground?
A cyclist is riding at constant speed along a straight road. Which pair of motion graphs correctly represents this situation?
A spacecraft in deep space fires its engines, accelerating from 500 m/s to 800 m/s over a distance of 3900 m. Calculate the acceleration using v² = u² + 2as.
In the practical investigation of a toy car's motion, a student uses a stopwatch to time the car over short distances. The main source of error in this method is:
An ice skater glides across a frozen lake at a constant velocity of 8.0 m/s for 25 s, then decelerates uniformly to rest in 10 s. What is the total distance covered during the entire journey?
A car accelerates from rest with a uniform acceleration of 2.0 m/s² for 200 m. A second identical car accelerates from rest with the same acceleration for 800 m. How does the final speed of the second car compare to the first?
A velocity–time graph shows an object moving at 10 m/s from t = 0 to t = 5.0 s, then accelerating uniformly to 30 m/s from t = 5.0 s to t = 15 s. Determine the total distance travelled over the 15 s.
A student claims: “An object moving at constant speed around a circular track has zero acceleration because its speed does not change.” Which statement correctly evaluates this claim?