Question

(b) An object of mass 50 kg is accelerated uniformly from a velocity of 4 m/s to 8 m/s in 8 s. Calculate the initial and final momentum of the object. Also find the magnitude of the force exerted on the object.​

Answer 1

Answer:

Mass (m) = 50kg

Initial Velocity (u) = 4m/s

Final Velocity (v) = 8m/s

Time (t) = 8s

Initial Momentum (p1) = mu

p1 = 50 × 4

= 200kgm/s

Final Momentum (p2) = mv

p2 = 50 × 8

= 400kgm/s

Acceleration (a) = v-u/t

a = 8-4/8

a = 1/2 = 0.5 m/s^2

Force (F) = ma

F = 50 ×0.5

F = 25J

•°•p1=200kgm/s

p2=400kgm/s

F=25J

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Answer 2

Answer:

thanks for the answer