Question

Solve the questions please fastly

Answer 1

force . It may be defined as an agency which tends to change or change the state of rest or of uniform motion or the direction of motion .

acceleration = slop of OA = 15 / 4 =
3.75 m/
$3.75 \frac{m}{ {s}^{2} }$
max force will be = ma
=1000×3.75
=3750 N

in AB acceleration will be zero because of uniform velocity

slop BC = 15 / 8 = 1 .8 m/s^2

so it is retardation and force will be

= ma
=1000 × 1.8
= 1800 N

Answer 2

Explanation:

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