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- Multiple ChoicePlease save your changes before editing any questions.
The graph shows how the speed of a trolley changes as it moves across a floor.How far does the trolley travel at constant speed?4 m
12 m
16 m
22 m
- Multiple ChoicePlease save your changes before editing any questions.A car driver takes a total of two hours to make a journey of 75 km. During the journey, she takes a break of half an hour and spends a quarter of an hour stationary in a traffic jam. At what average speed must she travel during the rest of the time for the whole journey to take two hours?38 km/h50 km/h60 km/h75 km/h
- Multiple ChoicePlease save your changes before editing any questions.The diagram below is a speed-time graph for a car. Which two quantities are needed to find the average speed of the car for this 50 s period?
the area under the graph and the total time taken
the initial speed and the final speed
the maximum speed and the minimum speed
the maximum speed and the time taken to reach it
- Multiple ChoicePlease save your changes before editing any questions.An object falls through a vacuum.Which row describes the acceleration and the velocity of the object?acceleration = constant, velocity = constantacceleration = constant, velocity = increasingacceleration = increasing, velocity = constantacceleration = increasing, velocity = increasing
- Multiple ChoicePlease save your changes before editing any questions.The distance-time graph shows the distance travelled by a moving car. Which feature of the graph gives the speed of the car?
the area between the line and the distance axis
the area between the line and the time axis
the difference between the starting and finishing distances
the gradient of the line
- Multiple ChoicePlease save your changes before editing any questions.The speed-time graph of a car is shown. What is the acceleration of the car?
4 m/s^2
6 m/s^2
50 m/s^2
100 m/s^2
- Multiple ChoicePlease save your changes before editing any questions.The velocity of a moving object is given bythe area below a displacement-time graph.the area below a velocity-time graph.the gradient of a displacement-time graph.the gradient of a velocity-time graph.
- Multiple ChoicePlease save your changes before editing any questions.A stone falling through the air has reached terminal velocity. Which row shows the acceleration and the velocity of the stone?acceleration = zero, velocity = constantacceleration = zero, velocity = increasingacceleration = 10 m/s^2, velocity = constantacceleration = 10 m/s^2, velocity = increasing
- Multiple ChoicePlease save your changes before editing any questions.Experiments are carried out on the Moon and on Earth. There is no atmosphere on the Moon and the gravitational field strength on the Moon is less than that on Earth. A coin and a feather are dropped at the same instant from the same height. Which statement is correct for the experiment on the Moon?The coin falls faster than the feather, but both take a longer time than on Earth.The coin falls faster than the feather, but both take a shorter time than on Earth.They fall together, taking a longer time than the coin takes on Earth.They fall together, taking a shorter time than the coin takes on Earth.
- Multiple ChoicePlease save your changes before editing any questions.A box is dropped from the top of a tall cliff. As the box falls, air resistance has a noticeable effect on its motion. Graphs I and 2 are displacement-time graphs. Graphs 3 and 4 are velocity-time graphs. Which graphs describe the motion of the box?
1 and 3
1 and 4
2 and 3
2 and 4
- Multiple ChoicePlease save your changes before editing any questions.Two objects have the same size and shape but one is heavier than the other. They are each dropped from rest in air. Comparing the two objects, the heavier object has
the higher initial acceleration and the higher terminal velocity.
the higher initial acceleration and the same terminal velocity.
the same initial acceleration and the same terminal velocity.
the same initial acceleration and the higher terminal velocity.
- Multiple ChoicePlease save your changes before editing any questions.The railway line between two MRT stations is straight and horizontal. The distance between the two stations is 960 m. A train accelerates uniformly from rest as it leaves one station. After 16 s, it reaches a speed of 20 m/s. The train continues at this speed for a time t. The train then decelerates uniformly for 18 s and stops in the second station. What is the value of t?14 s23 s31 s48 s
- Multiple ChoicePlease save your changes before editing any questions.The graph shows how the height of a falling object changes with time. What is the terminal velocity of the object?
1.0 m/s
1.3 m/s
1.6 m/s
2.0 m/s
- Multiple ChoicePlease save your changes before editing any questions.The graph shows how the velocity of an object varies with time t. What is the total distance travelled by the object between t = 0 s and t = 10 s?
48m
64 m
80 m
96 m
- Multiple ChoicePlease save your changes before editing any questions.A ball falls towards the ground, first in air and then later in an evacuated tube, which has most of the air in it removed. Which graph shows how the velocity of the ball changes with time in these cases?
A
B
C
D
- Multiple ChoicePlease save your changes before editing any questions.The graph shows how the velocity of a cyclist changes with time.How far does the cyclist travel when his acceleration is negative?
40 m
120 m
240 m
480 m
- Multiple ChoicePlease save your changes before editing any questions.A train travels north at a velocity of 25 m/s along a straight, horizontal track. At time t = 5.0s, its velocity starts to change and its acceleration is - 2.0 m/s^2. How is the train moving at time t = 15.0 s?travelling north with decreasing speedtravelling north with increasing speedtravelling south with decreasing speedtravelling south with increasing speed
- Multiple ChoicePlease save your changes before editing any questions.The velocity-time graph for a car is shown. What is the acceleration of the car at 30 s?
0
25 / 20
(25 - 5) / 30
25 / 30