Question

If the velocity of body is 2icap +2 j cap and acceralartion is minus 2 j cap then what is the speed of the body
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Answer 1

Answer:

6j

Explanation:

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Answer 2

Answer:

Initial Velocity is the velocity at which motion begins. It is velocity at time interval t = 0. It is commonly denoted by u.

Initial Velocity formula is used to find the initial velocity of the body if some of the quantities (like acceleration and time interval) are known. Initial velocity is expressed in meter per second (m/s). The initial velocity is given by

u = v - at

Where, v = Final Velocity, t = time taken, and a = acceleration

u = 3 i + 4 j

a = 0.4 i + 0.3 j

t = 10 s

Using initial velocity formula

3 i + 4 j = v - (0.4 i + 0.3 j) 10

v = 7 ( i + j)

Velocity is the vector quantity which is defined by both magnitude and direction but speed is scalar quantity which is defined by only magnitude.

The magnitude of v = ( 72+72)1/2=7∗(2)1/2

So the value of speed is 7∗(2)1/2

Explanation:

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