A car was brought to rest by uniform retardation(deceleration). Which of the following speed-time graphs best represents this motion? Please refer to the diagram

Please refer to the diagram

A car is travelling at 20 m/s when brakes are applied and the car was brought to rest with uniform deceleration in 4 s. Which of the following statements are false?

Note: Please sketch the diagram shown in the diagram on your own during exams. This is provided as a guide to help you.

Five telegraph poles are positioned at equal distances along the side of a road. (Please see diagram) A car accelerates until it is level with pole 5. The car then continues  along the road at a steady speed. The time to travel between one pole and the next are measured. Which time is the least? It is the time between_____________________.

A ticker-tape vibrator makes 50 dots per second and is used as a timer. When a tape was pulled through the vibrator, equally spaced dots are produced as seen in the diagram. A ruler is then placed against the tape. What is the speed of the tape?

Clue: The dots have been labelled in blue. First dot is dot zero as the pin of the vibrator has already passed through it before it starts. Hence there are 11 dots made by the vibrator. This corresponds to time of  (1/50 x 11) s

A ball is thrown vertically in air. It remains in air for 4 s before it was caught. How long does it take for the ball to reach maximum height? Please refer to the diagram.

Calculate the maximum height reached by the ball(Clue: Area under graph = distance travelled and maximum height is reached when the velocity of the ball is zero)

The graph below shows how the displacement of an object changes with time. At which point is the instantaneous velocity of the object the greatest?

Which one of the following velocity-time graphs shows an object moving with a decreasing acceleration?

Grace moves from Ato G in the sequence as illustrated in the diagram. She took 5.0 s for the whole  journey. What is the magnitude of her average velocity from A to G?             

A small stone is dropped from the top of a ladder, falls and hits the ground. It does not rebound. Which speed-time graph is correct?

A ball is dropped from the 10^th floor of a building. Which acceleration-time graph best represents this motion? Assume air resistance is negligible.                          

An object falls from a displacement  of 4 m above the ground towards the ground.  The displacement-time graph is shown in the diagram. Which of the following statements describes the motion of the object?

Hint: The gradient of the displacement time graph is actually its velocity

Keith throws a ball down from the top of the building at an initial speed of 5 ms^-1.If the ball takes 4 s to reach the floor, what is the height of the building? Take the acceleration due to free fall to be 10 m/s².

Hint: A graph is drawn for you as shown. Do note that during assessment, you will need to plot this graph on your own.                                                                             

Which of the following best describes the distance-time graph of an object shown?

A stone is thrown upwards from the top of a cliff. After reaching its maximum height, it falls past the cliff-top and into the sea.

The graph shows how the vertical velocity, v, of the stone varies with the time, t, after being thrown upwards. R and S are the magnitudes of the areas of the two triangles.The height of the cliff from sea level can be represented by the area(s) _________ under the graph.

Ignoring air resistance, which graph correctly shows the motion of an object thrown upwards from a fixed distance through an increase of vertical height of 5 m? Hint: The acceleration due to gravity(is always downwards) is 10 m/s²