Question

body having uniform acceleration of 10 ms-² has a velocity of 100 ms-¹ in what time the velocity will be doubled?​

Answer 1

Physics is the natural science that studies matter, its motion and behavior through space and time, and the related entities of energy and force. Physics is one of the most fundamental scientific disciplines, and its main goal is to understand how the universe behaves.

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Answer 2

Given:—

Accelerarion (a)=10m/s^2

Final velocity(v) =100m/s

It is understood that initial velocity (u)= 0

According to the first kinematical equation,

v = u +at

100 = 0+10t

t=100/10

t=10 s…….(1)

Similarly,

When v is doubled= 2v =2×100= 200m/s,

v=u +at

200= 0 +10t

t= 200/10

t=20 s …..(2)

Therefore, time taken to double the velocity

=20 -10

=10 s

=10 sHence, the time taken to double the velocity is 10s.