Question

If displacement of a body given by x=t²+1 find velocity of body t=2 sec

Answer 1

Explanation:

differentiation of displacement is velocity

Answer 2

Given ,

• Displacement ( x ) = t²+ 1
• Time taken ( t ) = 2 sec

Thus ,

• Velocity = Displacement ÷ Time
• Velocity = t² + 1 / t
• Velocity = 2² + 1 / 2
• Velocity = 4 + 1 / 2
• Velocity = 5 / 2
• Velocity = 2.5 unit / sec.

if the body is moving along x - axis,

Then ,

• Velocity = dx / dt
• Velocity = 2 x 2
• Velocity = 4 unit / sec.