A body of mass 80kg moving with a velocity of 6m/s hits a stationary body

Physics

1 answer:

Sauron [17]1 year ago

8 0

Answer:

4 m/s

Explanation:

Conservation of momentum , mv

Before collision 80 kg * 6 m/s = 480 kg-m/s

after the collision,

the momentum is the same but the mass is 80+40 kg =120 kg

mv = 480

120 * v = 480

v = 4 m/s

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A particle with charge 8 µC is located on the x-axis at the point −10 cm , and a second particle with charge 3 µC is placed on t

bixtya [17]

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Explanation:

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3 years ago

1. Plot the following graphs:

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Answer:

(a) The distance-time graph for an object with uniform speed is giving by a straight line sloped graph with a constant positive or negative gradient as shown in the attached diagram

(b) The distance-time graph for an object with non-uniform speed is giving by a curved line sloped graph with varying gradient as shown in the attached diagram

(c) The velocity-time graph for a car with uniform motion is giving by a horizontal line graph at the speed of constant motion with a zero gradient as shown in the attached diagram

(d) The velocity-time graph for a car moving with uniform acceleration is giving by a straight line sloped graph with a constant positive or negative gradient as shown in the attached diagram

(e) The velocity-time graph for a car moving with non-uniform acceleration is giving by a curved line sloped graph with varying gradient as shown in the attached diagram

(f) According to Newton's first law of motion, an object at rest will remain at rest with no motion unless acted by a force, an therefore, will have no motion with time

Explanation: