Later, the child in (b) travels down a slope at a constant angle to the horizontal, as shown in Fig. 2.1. Fig. 2.1 (not to scale) At point A her speed is $$$0.60 \mathrm{~m} \mathrm{~s}^{-1}$$$. She has a constant acceleration of $$$0.85 \mathrm{~m} \mathrm{~s}^{-2}$$$ parallel to the slope. After a time of 3.7 s , she reaches point $$$B$$$. Calculate the distance $$$x$$$ travelled by the child along the slope from A to B.

Physics

IGCSE&ALevel

CAIE

Exam No：9702_w24_qp_22 Year：2024 Question No：2(c)

Answer:

Knowledge points:

2.2 pending

3.1.1 define and use distance, displacement, speed, velocity and acceleration

3.1.2 use graphical methods to represent distance, displacement, speed, velocity and acceleration

3.1.3 determine displacement from the area under a velocity-time graph

3.1.4 determine velocity using the gradient of a displacement-time graph

3.1.5 determine acceleration using the gradient of a velocity-time graph

3.1.6 derive, from the definitions of velocity and acceleration, equations that represent uniformly accelerated motion in a straight line

3.1.7 solve problems using equations that represent uniformly accelerated motion in a straight line, including the motion of bodies falling in a uniform gravitational field without air resistance

3.1.8 describe an experiment to determine the acceleration of free fall using a falling body

3.1.9 describe and explain motion due to a uniform velocity in one direction and a uniform acceleration in a perpendicular direction

Answer:

Knowledge points:

Solution:

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