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State Newton’s second law of motion. Derive this law mathematically. A 1000 kg vehicle moving with a speed of 20m/s is brought to rest in a distance of 50 metres. Find the acceleration and calculate the force acting on the vehicle.

Sagot :

hishamsa3id

Answer:

-4000 N

Explanation:

newton second law F=ma

m=1000kg

vi=20m/s

vf=0

d=50 m

vf^2=vi^2+2ad

0=20^2+2a×50

100 a= -400

a= -4 m/S2

F=ma = 1000×-4 = -4000 N

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