Fig． 1.1 shows the speed－time graph for a cyclist riding a bicycle．（c）Calculate the distance travelled by the cyclist from time $$$=20 \mathrm{~s}$$$ to time $$$=30 \mathrm{~s}$$$ ． distance $$$=$$$ .................................................. m［3］［Total：7］

Physics

IGCSE&ALevel

CAIE

Exam No：0625_w24_qp_31 Year：2024 Question No：1(c)

Answer:

Knowledge points:

1.2.1 Define speed as distance travelled per unit time; recall and use the equation v = s/t

1.2.10 Determine from given data or the shape of a speed–time graph when an object is moving with: (a) constant acceleration (b) changing acceleration

1.2.11 (old)Recognise linear motion for which the acceleration is constant

1.2.11 Calculate acceleration from the gradient of a speed–time graph

1.2.12 (old)Recognise motion for which the acceleration is not constant

1.2.12 Know that a deceleration is a negative acceleration and use this in calculations

1.2.13 Describe the motion of objects falling in a uniform gravitational field with and without air/liquid resistance (including reference to terminal velocity)

1.2.2 Define velocity as speed in a given direction

1.2.3 Recall and use the equation average speed = total distance travelled / total time taken

1.2.4 Sketch, plot and interpret distance–time and speed–time graphs

1.2.5 （old）Demonstrate understanding that acceleration and deceleration are related to changing speed including qualitative analysis of the gradient of a speed–time graph

1.2.5.1 at rest

1.2.5.2 moving with constant speed

1.2.5.3 accelerating and decelerating

1.2.6 Calculate speed from the gradient of a straight-line section of a distance–time graph

1.2.7 Calculate the area under a speed–time graph to determine the distance travelled for motion with constant speed or constant acceleration

1.2.8 State that the acceleration of free fall g for an object near to the surface of the Earth is approximately constant and is approximately 9.8 m/s^2

1.2.9 Define acceleration as change in velocity per unit time; recall and use the equation a = Δv/Δt

Fig． 1.1 shows the speed－time graph for a cyclist riding a bicycle．（c）Calculate the distance travelled by the cyclist from time $$\(=20 \mathrm{~s}\)$$ to time $$\(=30 \mathrm{~s}\)$$ ． distance $$\(=\)$$ .................................................. m［3］［Total：7］

Answer:

Knowledge points:

Solution:

Fig． 1.1 shows the speed－time graph for a cyclist riding a bicycle． （c）Calculate the distance travelled by the cyclist from time $$\(=20 \mathrm{~s}\)$$ to time $$\(=30 \mathrm{~s}\)$$ ． distance $$\(=\)$$ .................................................. m［3］ ［Total：7］

Answer:

Knowledge points:

Solution:

Related Question

Fig． 1.1 shows the speed－time graph for a cyclist riding a bicycle．（c）Calculate the distance travelled by the cyclist from time $$\(=20 \mathrm{~s}\)$$ to time $$\(=30 \mathrm{~s}\)$$ ． distance $$\(=\)$$ .................................................. m［3］［Total：7］