Question

A body of mass 30 kg is moving velocity 20 metre per sec in north direction making an angle of 30 degree with East the force of 150 Newton acting on it in south direction find the magnitude and direction find the magnitude and direction of velocity after 5 second

Answer 1

Answer:

Given,

Force act in direction of west

Velocity toward north Is

Initial velocity in west direction is

Acceleration in west direction is

Final velocity after time 4 sec, in west direction is

Resultant velocity is

Direction of resultant velocity makes angle with the direction of force act.

Hence the velocity of the body after the force ceases will be todards an angle with the direction of force.

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Quick summary with Stories PHYSICS

A body of mass is moving with velocity due north. It is acted on by a force of due west for seconds. Find the velocity of the body after the forces cases to act.

MEDIUM 1 kg 30 ms −1

10 N 4

A 50 m/s; tan −1 ( 4 3 )

B 100 m/s; tan −1 ( 3 4 )

C 50 m/s; tan −1 ( 5 3 )

D 100 m/s; tan −1 ( 5 4 )

F = 10 N

V = n 30 ms −1

u = 0 m/s

a = = M F = 1 10 10 m/s 2

V = s u + at = 0 +

10 × 4 = 40m/s

V = R = V + V s 2 n2 =

Explanation:

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