1. Differentiate between displacement and distance traveled. A. B. Differentiate

Question

1. Differentiate between displacement and distance traveled. A. B. Differentiate between speed and velocity. C. Provide the following formulas: Average Velocity, v = Instantaneous Velocity, v Average Acceleration, a Provide the Kinematic equations for constant acceleration. 1) 2) 3) 4) Fill in the blanks. Inst antaneous Acceleration, a= D. E. SI units for length SI units for SI units for time SS Objects that move vertically near the surface of the Earth, either falling or having been projected vertically up or down, move with the constant downward due to is ignored. , whose magnitude is if air resistance

Explanation / Answer

1. A. Displacement is a vector quantity means it will have magntiude as will as direction. It is defined as the shortest distance between two points. It can be positive, negative or zero.

Distance is a scalar quantity and has only magnitude. It depends on actual path taken. Distance can never be negative.

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B. Speed is a scalar quantity means it has only magnitude and is always positive. For example - a car is moving at 50 m/s. here 50 m/s is speed

velocity is vector quantity and gives magntitude and direction. It can be negative or positive. For example - a car is moving at 50 m/s in the west direction. It means here magnitude is 50 m/s and direction is west (negative)

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C. Average velocity = displacement / change in time (time interval)

Instantaneous velocity = derivative of positiome with respect to time = dx/dt

where x is position

Average accelaration = change in velocity (final velocity - initial velocity) / time interval

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D. Kinematic equations are

vf = vi + at

vf2 - vi2 = 2ad

d = vit + 1/2at2

d = vi + vf / 2

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E. S.I units

Length = meters

mass = Kilogram

time = seconds

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F. acceleration due to gravity whose magntitude is 9.8 m/s2

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