A block of mass $$$5 \mathrm{~kg}$$$ is being pulled along a rough horizontal floor by a force of magnitude $$$X \mathrm{~N}$$$ acting at $$$30^{\circ}$$$ above the horizontal (see diagram). The block starts from rest and travels $$$2 \mathrm{~m}$$$ in the first $$$5 \mathrm{~s}$$$ of its motion. Find the acceleration of the block. ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................

Mathematics

IGCSE&ALevel

CAIE

Exam No：9709_m21_qp_42 Year：2021 Question No：5(a)

Answer:

${\left[2=\frac{1}{2} \times a \times 25\right] }$
$a=0.16 \mathrm{~ms}^{-2}$

Knowledge points:

4.2.4 use appropriate formulae for motion with constant acceleration in a straight line. （Questions may involve setting up more than one equation, using information about the motion of different particles.）

Answer:

Knowledge points:

Solution:

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